43 research outputs found
Energetic study of a residential building in Skutskär and savings proposal
No full textThis project consists on the Energy audit carried out on a residential building in Skutskär, property of the company Älvkarlebyhus, which is placed in the Älvkarleby municipality, belonging to Uppsala County in Sweden. The aim of the Energy audit is to obtain how much Energy is used, when is it used and how is it used. As well as the costs of the Energy use. The aim of the Energy audit also consists in reduces the Energy use applying efficiency measures. The audit carried out consist on identifying the heat losses and heat gains of the building, thus establishing an Energy balance that will reflect the Energy state of the building and finally propose some efficiency measures that could be applied. With this purpose, a strong method was developed in order to obtain as accurate results as possible. This method studies separately each component of the balance in order to get a better approach. The idea when working and present the results is to manage all the information in an easy way and present it in an easily understandable way for everyone, thus was used a spreadsheet. The expected results have been achieved; the difference between the heat losses and gains is of 0 MWh, which represents the balance 0 and all the values obtained are according to the experience values, which achieve the expected results. The total heat gain of the balance accounts for 1575,23 MWh. It is compounded by the District heating consumption which accounts 742,22 MWh that represents the 47 % of the heat gain and by the free heating which accounts for 832,79 MWh that represents the 53 %. The free heating is compounded by solar radiation which accounts for 643,36 MWh representing 41 % and for Internal heating which accounts for 189,43 MWh that represents 12 %. The total heat loss of the balance accounts for 1575,23 MWh. It is compounded by transmission losses which accounts for 875,46 MWh that represents 56 %, mechanical ventilation which accounts for 369,89 MWh that represents the 23 %, natural ventilation which account for 182,88 MWh that represents 12 % and hot tap water which account for 147 and represents 9 %. The efficiency measures will improve the Energy use in the buildings; especially in the cases were the Energy usage is too high, as in the case of transmission losses. Thus, the efficiency measures will be proposed mainly to alleviate the high values but also to improve other inefficient uses of the Energy. There are some efficiency measures proposed for every component of the balance and there is also some recommendation for the company in order to implement the most attractive ones, taking into account its profitability. These measures are only proposed and not studied deeply because of the main limitation of this thesis. Therefore, it is recommended to continue the study in order to examine and analyse deeply each measure, according to the energetic survey already done
Energy Optimization and Techno-economic assessment of an air source heat pump for sanity hot water production
No full text[EN] Nowadays there are in the market high performance air source heat pumps for sanitary hot
water production (SHW) and there is lot of research work for further increasing it. Nevertheless,
when installing those high-performance system coupled with a storage tank, until 30 % of the
global system energy efficiency (SPF4) can be spoiled. The indirect connection between the heat
pump and the storage tank has a big influence on the SPF4. However, after reviewing the
literature, it was found that none of the studies related to this topic was specifically addressing
this issue.
This work is focused on the indirect connection, which according to EN 1717:2000 is of
compulsory fulfilment to prevent pollution of potable water by backflow. The objective thus is
to determine the indirect connection with the highest possible energy efficiency, costeffectiveness,
and the lowest environmental cost. Moreover, an additional objective is to
determine the operating variables that make the system work in the optimal SPF4. Concluding
with two guides, one for the selection of the optimal case depending on the climate of the region
in the EU and another to select the optimal operation values of the HP to maximize the SPF4.
An integrated system model in TRNSYS has been created based on Geot€ch European project,
analysing three different options of indirect connection: (i) coil heat exchanger, (ii) external heat
exchanger and (iii) double wall condenser. Cases that have been compared against the
conventional systems for SHW production: immersion electric heater and gas boiler. Resulting
in the double wall condenser case as the most efficient, cost-effective and least CO2 emitter
option. Regarding the techno-economic analysis, heat pump technology has been proved
profitable against the immersion electric heater but non-profitable against the gas boiler and
thus the breakeven price for the profitability of the HP over the gas case has been obtained.[ES] Actualmente existen en el mercado bombas de calor aerotérmicas para producción de agua
caliente sanitaria de muy altas prestaciones y además hay mucha labor de investigación para
obtener equipos con mejores prestaciones. En cambio, cuando estos equipos se instalan junto
con un sistema de almacenamiento térmico la eficiencia del sistema puede caer hasta un 30 %.
La conexión indirecta entre la bomba de calor y el sistema de almacenamiento tiene pues una
gran influencia en la eficiencia global del sistema y no hay ningún estudio específico acerca de
este tema en la literatura.
Este trabajo se centra en dicha conexión indirecta que de acuerdo con la EN 1717:2000 es de
obligado cumplimiento para prevenir la contaminación del agua de consumo por reflujo. El
objetivo es determinar la conexión indirecta con la eficiencia energética y rentabilidad más altas
y con los mínimos costes medioambientales. Además, otro objetivo adicional es el de determinar
los valores de operación que hacen trabajar al sistema en el punto de máxima eficiencia.
Concluyendo con 2 guías, una para la selección del caso de conexión indirecta óptima en función
del clima de la UE y otra para seleccionar los valores de operación de la bomba que maximizan
SPF4.
Tres opciones de conexión indirecta se han analizado: (i) intercambiador tipo coil,
(ii) intercambiador de calor externo y (iii) condensador de doble pared; desarrollado un modelo
integral del sistema en TRNSYS basado en el proyecto Europeo Geot€ch. Comparándolos frente
a los sistemas convencionales: calentador eléctrico y caldera de gas. Los resultados muestran la
opción del condensador de doble pared como la más eficiente, la más rentable y con el mínimo
coste medioambiental. Respecto al análisis tecno-económico, el sistema analizado resulta
rentable frente al calentador eléctrico, pero no rentable frente a la caldera de gas, por ello se
ha calculado el precio del gas a partir del cual la bomba de calor sería rentable[CA] Actualment existeixen en el mercat bombes de calor aerotèrmiques per a la producció d'aigua
calenta sanitària de altes prestacions i, a més a més, hi ha molta labor d'investigació per a obtenir
equips amb millors prestacions. En canvi, quan estos equips s'instal·len junt amb un sistema
d’emmagatzemament tèrmic, l'eficiència del sistema pot caure fins a un 30 %. La connexió
indirecta entre la bomba de calor i el sistema d'emmagatzemament té, doncs, una gran
influència en l'eficiència global del sistema i no hi ha cap estudi específic sobre este tema en la
literatura.
Este treball se centra en dita connexió indirecta que, d'acord amb l'EN 1717:2000, és de
compliment obligatori per a prevenir la contaminació de l'aigua de consum per reflux. L'objectiu
és determinar la connexió indirecta amb l'eficiència energètica i rendibilitat més altes i amb els
costos mediambientals mínims. A més, un altre objectiu addicional és el de determinar els valors
d'operació que fan treballar al sistema en el punt de màxima eficiència (SPF4). Concloent amb 2
guies, un per a la selecció del cas de connexió indirecta òptima depenent del clima de la UE i
altra per a seleccionar els valors d'operació de la bomba per a maximitzar SPF4.
Tres opcions de connexió indirecta s'han analitzat: (i) intercanviador tipus coil, (ii) intercanviador
de calor extern i (iii) condensador de doble paret; desenvolupant un model integral del sistema
en TRNSYS basat en el projecte Europeu Geot€ch. Els casos analitzats s'han comparat davant
dels sistemes convencionals: calfador elèctric i caldera de gas. Els resultats mostren l'opció del
condensador de doble paret com la més eficient, la més rendible i amb el mínim cost
mediambiental. Respecte a l'anàlisi tecno-econòmic, el sistema analitzat resulta rendible davant
el calfador elèctric però no rendible enfront la caldera de gas, per això s'ha calculat el preu del
gas a partir del qual la bomba de calor seria rendibleMasip Sanchis, X. (2018). Energy Optimization and Techno-economic assessment of an air source heat pump for sanity hot water production. Universitat Politècnica de València. https://riunet.upv.es/handle/10251/108978TFG
Modeling, analysis and energy optimization of an air source heat pump system for SHW production
No full textIn order to fulfill with the European normative EN-1717:2000 regarding the general requirements of devices to prevent pollution of potable water by backflow, in those systems using a heat pump (HP) for the production of sanitary hot water (SHW), the coupling of the HP with the storage tank must be indirect. This paper will analyze three of the possible coupling configurations for the case of an air source heat pump system: (i) external brazed plate heat exchanger, (ii) coil heat exchanger inside the storage tank and (iii) double wall condenser at the heat pump. The system will be modeled using a dynamic simulation tool (TRNSYS). The aim of this work is to compare the energy performance of each configuration and to optimize its operation.The present work has been supported by the European Community Horizon 2020 Program for European Research and Technological Development (2014-2020) inside the framework of the project 656889 – GEOTeCH (Geothermal Technology for Economic Cooling and Heating), by the Generalitat Valenciana inside the program “Ayudas para la contratación de personal investigador en formación de carácter predoctoral (ACIF/2016/131)” and by the Ministerio de Educación, Cultura y Deporte inside the programme ‘Formación de Profesorado Universitario (FPU15/03476)’Masip Sanchis, X.; Cazorla-Marín, A.; Montagud- Montalvá, C.; Marchante-Avellaneda, J.; Corberán, JM. (2018). Modeling, analysis and energy optimization of an air source heat pump system for SHW production. Instituto de Ingeniería Energética. Universitat Politècnica de València. 1-7. https://riunet.upv.es/handle/10251/129634S1
Influence of the Thermal Energy Storage Strategy on the Performance of a Booster Heat Pump for Domestic Hot Water Production System Based on the Use of Low Temperature Heat Source
No full text[EN] Energy recovery from a low temperature heat source using heat pump technology is becoming a popular application. The domestic hot water demand has the characteristic of being very irregular along the day, with periods in which the demand is very intensive and long periods in which it is quite small. In order to use heat pumps for this kind of applications efficiently, the proper sizing and design of the water storage tank is critical. In this work, the optimal sizing of the two possible tank alternatives, closed stratified tank and variable-water-volume tank, is presented, and their respective performance compared, for domestic hot water production based on low temperature energy recovery in two potential applications (grey water and ultra-low temperature district heating). The results show that the efficiency of these kind of systems is very high and that variable-water-volume tanks allow a better use of the energy source, with an 8% higher exergy efficiency and around 3% better seasonal performance factor (SPF), being able to provide similar comfort levels with a smaller system size"Vicerectorado de Investigacion, Innovacion y Transferencia of the Universitat Politecnica de Valencia (Spain)" throught the project "REDUCCION DE LAS EMISIONES DE CO2 A ALTA TEMPERATURE A PARTIR DE LA RECUPERACION DE CALOR RESIDUAL MEDIANTE EL USO DE UNA BOMBA DE CALOR"with the reference SP20180039 from the program "Primeros proyectos de investigacion (PAID-06-18)".Masip, X.; Navarro-Peris, E.; Corberán, JM. (2020). Influence of the Thermal Energy Storage Strategy on the Performance of a Booster Heat Pump for Domestic Hot Water Production System Based on the Use of Low Temperature Heat Source. Energies. 13(24):1-24. https://doi.org/10.3390/en13246576S12413242050 Long-Term Strategy https://ec.europa.eu/clima/policies/strategies/2050_enEnergy Consumption Buildings https://ec.europa.eu/energy/en/topics/energy-efficiency/buildingsEnergy Consumption in Households http://ec.europa.eu/eurostat/statistics-explained/index.php/Energy_consumption_in_householdshttps://www.google.com.hk/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&cad=rja&uact=8&ved=2ahUKEwip0ubH48ztAhUEMN4KHRmLA0kQFjABegQIAxAC&url=https%3A%2F%2Feur-lex.europa.eu%2FLexUriServ%2FLexUriServ.do%3Furi%3DOJ%3AL%3A2009%3A140%3A0016%3A0062%3Aen%3APDF&usg=AOvVaw10tSQ3SpiUkxpXKuCB6R0nCecchinato, L., Corradi, M., Fornasieri, E., & Zamboni, L. (2005). Carbon dioxide as refrigerant for tap water heat pumps: A comparison with the traditional solution. International Journal of Refrigeration, 28(8), 1250-1258. doi:10.1016/j.ijrefrig.2005.05.019Pitarch, M., Navarro-Peris, E., Gonzálvez-Maciá, J., & Corberán, J. M. (2017). Experimental study of a subcritical heat pump booster for sanitary hot water production using a subcooler in order to enhance the efficiency of the system with a natural refrigerant (R290). International Journal of Refrigeration, 73, 226-234. doi:10.1016/j.ijrefrig.2016.08.017Pitarch, M., Hervas-Blasco, E., Navarro-Peris, E., Gonzálvez-Maciá, J., & Corberán, J. M. (2017). Evaluation of optimal subcooling in subcritical heat pump systems. International Journal of Refrigeration, 78, 18-31. doi:10.1016/j.ijrefrig.2017.03.015Hervas-Blasco, E., Pitarch, M., Navarro-Peris, E., & Corberán, J. M. (2018). Study of different subcooling control strategies in order to enhance the performance of a heat pump. International Journal of Refrigeration, 88, 324-336. doi:10.1016/j.ijrefrig.2018.02.003Meggers, F., & Leibundgut, H. (2011). The potential of wastewater heat and exergy: Decentralized high-temperature recovery with a heat pump. Energy and Buildings, 43(4), 879-886. doi:10.1016/j.enbuild.2010.12.008Liu, L., Fu, L., & Jiang, Y. (2010). Application of an exhaust heat recovery system for domestic hot water. Energy, 35(3), 1476-1481. doi:10.1016/j.energy.2009.12.004Baek, N. C., Shin, U. C., & Yoon, J. H. (2005). A study on the design and analysis of a heat pump heating system using wastewater as a heat source. Solar Energy, 78(3), 427-440. doi:10.1016/j.solener.2004.07.009Bertrand, A., Aggoune, R., & Maréchal, F. (2017). In-building waste water heat recovery: An urban-scale method for the characterisation of water streams and the assessment of energy savings and costs. Applied Energy, 192, 110-125. doi:10.1016/j.apenergy.2017.01.096High Efficiency Heat Pump for Domestic Hot Water Generation http://docs.lib.purdue.edu/iracc%0Ahttp://docs.lib.purdue.edu/iracc/953Østergaard, P. A., & Andersen, A. N. (2018). Economic feasibility of booster heat pumps in heat pump-based district heating systems. Energy, 155, 921-929. doi:10.1016/j.energy.2018.05.076Fischer, D., Toral, T. R., Lindberg, K. B., Wille-Haussmann, B., & Madani, H. (2014). Investigation of Thermal Storage Operation Strategies with Heat Pumps in German Multi Family Houses. Energy Procedia, 58, 137-144. doi:10.1016/j.egypro.2014.10.420Han, Y. M., Wang, R. Z., & Dai, Y. J. (2009). Thermal stratification within the water tank. Renewable and Sustainable Energy Reviews, 13(5), 1014-1026. doi:10.1016/j.rser.2008.03.001Haller, M. Y., Haberl, R., Mojic, I., & Frank, E. (2014). Hydraulic Integration and Control of Heat Pump and Combi-storage: Same Components, Big Differences. Energy Procedia, 48, 571-580. doi:10.1016/j.egypro.2014.02.067Liu, F., Zhu, W., Cai, Y., Groll, E. A., Ren, J., & Lei, Y. (2017). Experimental performance study on a dual-mode CO2 heat pump system with thermal storage. Applied Thermal Engineering, 115, 393-405. doi:10.1016/j.applthermaleng.2016.12.095Castell, A., Medrano, M., Solé, C., & Cabeza, L. F. (2010). Dimensionless numbers used to characterize stratification in water tanks for discharging at low flow rates. Renewable Energy, 35(10), 2192-2199. doi:10.1016/j.renene.2010.03.020Armstrong, P., Ager, D., Thompson, I., & McCulloch, M. (2014). Domestic hot water storage: Balancing thermal and sanitary performance. Energy Policy, 68, 334-339. doi:10.1016/j.enpol.2014.01.012Hervás-Blasco, E., Navarro-Peris, E., & Corberán, J. M. (2019). Optimal design and operation of a central domestic hot water heat pump system for a group of dwellings employing low temperature waste heat as a source. Energy, 188, 115979. doi:10.1016/j.energy.2019.115979Next Generation of Heat Pumps Working with Natural Fluids (NxtHPG) http://www.nxthpg.eu/Transient Systems Simulation Homepage http://www.trnsys.comMasip, X., Cazorla-Marín, A., Montagud-Montalvá, C., Marchante, J., Barceló, F., & Corberán, J. M. (2019). Energy and techno-economic assessment of the effect of the coupling between an air source heat pump and the storage tank for sanitary hot water production. Applied Thermal Engineering, 159, 113853. doi:10.1016/j.applthermaleng.2019.11385
Optimal design and operation of a multi-variable heat pump system for sanitary hot water production
No full textAccording to the European Commission, buildings are nowadays responsible for the 40 % of the
energy consumption and 36 % of CO2 emissions in Europe, corresponding the gross of the energy
consumption to the air-conditioning and sanitary hot water (SHW) production systems. Within
the introduction of the Near Zero Energy Buildings (NZEB) concept, the percentage of the energy
consumption of SHW production systems is expected to dramatically increase. Therefore, in order
to reduce the energy usage for SHW production in the residential sector, it will be key the use of
highly energy efficient technologies as well as good design, installation procedures, and operation
strategies carried out in the facilities.
This research work is framed in a H2020 European project titled Geot€ch `GEOthermal
Technology for economic Cooling and Heating¿ whose aim is to develop a multi-variable heat
pump system solution for heating, cooling and SHW production, making the best use of hybrid
HP and control technologies.
The present work is focused on optimizing the design and operation of such a multi-variable HP
system when it works for SHW production. In this context, it is not only important to maximise
the HP efficiency but also to minimize the system efficiency losses that appear when coupling the
HP to the storage tank. In order to fulfil with the European normative EN-1717:2000 regarding
the general requirements of devices to prevent pollution of potable water by backflow, the
coupling of the HP with the storage tank must be indirect.
An integrated system model in TRNSYS has been created in order to analyse three different
options of indirect coupling: (i) coil heat exchanger inside the storage tank, (ii) external brazed
plate heat exchanger and (iii) double wall condenser at the HP. The aim of this work is not only
to select the optimal type of HP coupling but also to optimize the system operation for three
representative climates existing around Europe. Results conclude that up to 30% of the system
energy efficiency can be spoiled either by not selecting the optimal type of coupling or not making
the system work under optimal operating conditions.The present work has been supported by the Ministerio de Educación, Cultura y Deporte inside
the programme ‘Formación de Profesorado Universitario (FPU15/03476)’Masip Sanchis, X.; Cazorla-Marín, A.; Montagud- Montalvá, C.; Marchante-Avellaneda, J.; Corberán, JM. (2019). Optimal design and operation of a multi-variable heat pump system for sanitary hot water production. Universidad de Castilla-La Mancha. 61-71. https://riunet.upv.es/handle/10251/129321S617
Modelling and energy analysis of a dual source heat pump system in an office building
No full textThis paper presents the modelling and energy analysis of a dual source heat pump system for the
production of heating, cooling and domestic hot water (DHW) in buildings.
The research work was carried out in the framework of the Geot€ch project ‘GEOthermal Technology for
economic Cooling and Heating’. The Geot€ch project, funded by the European commission within the H2020
program, is a four years’ duration project which demonstrates the next generation of ground source heat pump
systems with a high energy efficiency but also with lower system costs with respect to those already existing in
the market. To this end, one of the objectives of the project is the design of an efficient and comparative low cost
‘plug& play’ system for providing the heating, cooling and DHW needs in three demonstration sites located in
Italy, the United Kingdom and the Netherlands respectively.
In this context, an innovative dual source heat pump has been developed, which is capable of making optimal
use of ground or air environmental heat sources according to operating and climate conditions. On the other
hand, in order to reduce the costs of the installation, a new more efficient technology of coaxial borehole heat
exchangers will be developed within the framework of the project. The project started on May 2015 and it is still
ongoing.
This paper first describes the characteristics of the dual source heat pump designed in the project. Then, in order
to assist both in the optimal design and energy optimization of the operation of the system, a model of the
‘plug&play’ system in TRNSYS including all the integrated system components (dual source heat pump, ground
source heat exchanger, air conditioning and DHW hydraulic loops) is presented for the demo site located in the
Netherlands. Finally, the paper presents an analysis of the system operation as well as a first energy assessment
in order to identify key control strategies needed to optimize the seasonal energy performance of the system.The present work has been supported by the European Community Horizon 2020 Program for European Research
and Technological Development (2014-2020) inside the framework of the project 656889 – GEOTeCH (Geothermal
Technology for Economic Cooling and Heating) and by the Generalitat Valenciana inside the program “Ayudas para
la contratación de personal investigador en formación de carácter predoctoral (ACIF/2016/131)”.Corberán, JM.; Cazorla-Marín, A.; Marchante-Avellaneda, J.; Montagud- Montalvá, C.; Masip Sanchis, X. (2017). Modelling and energy analysis of a dual source heat pump system in an office building. Università di Bologna. 1-10. https://riunet.upv.es/handle/10251/129393S11
Game accessibility review dataset - Granell 2025 [Dataset]
No full textThis dataset includes bibliographical data from 318 references about game accessibility as part of a systematic scoping review of the literature between 2003-2024. It also includes processed data and frequency analysis about author and indexed keywords
Asiobaccha maculosa Mengual & Thompson, sp. nov.
No full text<i>Asiobaccha maculosa</i> Mengual & Thompson sp. nov. <p>(Figures 6c, d, f, 12e)</p> <i>Description</i> <p> <i>Male: Head.</i> Face with facial tubercle, yellow, yellow pilose; gena yellow, slightly white pollinose posteriorly; lunule black; frons yellow with a medial, black macula pointing backwards, yellow pilose, without pollinosity; vertical triangle narrow, black, yellow pilose, white pollinose posteriorly; antenna yellow-brown, yellow pilose; arista brown, bare; eye bare, holoptic; occiput white pollinose, yellow pilose (Figure 6f).</p> <p> <i>Thorax.</i> Scutum brown to black, with short, yellow pile; mesonotal fringe absent; postpronotum yellow, bare, white pollinose; notopleuron yellow, slightly white pollinose, yellow pilose; postalar callus lighter in background colour; scutellum yellow with a posteromedial black macula, yellow pilose, subscutellar fringe absent (Figure 6c, d). Pleuron yellow, katatergum and anatergum darker, brownish, yellow pilose; metaepisternum yellow pilose ventrad to spiracle; metasternum bare; calypter yellow; plumula very short, yellow; halter: pedicel yellow, capitulum brown; posterior spiracular fringes yellow. <i>Wing</i>: membrane hyaline; stigma, costal cell and R1 yellow; microtrichose, except cell BM and CuP very basally. Alula present, rectangular, narrower than costal cell, microtrichose. <i>Legs</i>: completely yellow, except metafemur yellow dorsally and dark brown ventrally, with a dark subapical annulus (ring), metatibia yellow with a medial dark annulus.</p> <p> <i>Abdomen.</i> Petiolate, unmargined. Tergum 1 yellow, yellow pilose; tergum 2 mostly dark, dark brown to black, with a basal yellow fascia (two basal, triangular yellow maculae joined medially) and two lateral yellow maculae, yellow and black pilose; tergum 3 black with two medial, rectangular, large yellow maculae not joined medially reaching lateral margins; tergum 4 black with two submedial, yellow fasciate maculae reaching anterior margin; tergum 5 black with two anteromedial yellow maculae; terga 4 and 5 with posterior margin yellowish (Figure 6c, d); sterna 1 <i>–</i> 3 yellowish, sternum 3 with a black fascia, and sterna 4 and 5 dark.</p> <p> <i>Female.</i> Similar to male except normal sexual dimorphism and as follows: lunule black; frons yellow laterally on basal 1/2 with a medial, black vittae joining the black area on posterior 1/2, shiny on basal 1/2 and yellow pollinose on posterior 1/2 and ocellar triangle. The pollinose area on posterior 1/2 of the frons has a thin, medial shiny vitta (Figure 12e). Both female paratypes lack the alula, but this might be due to preservation conditions in author <i>’</i> s opinion.</p> <p> <i>Length (N = 3).</i> Body, 12.0 <i>–</i> 14.0 (13.2) mm; wing, 12.5 <i>–</i> 13.2 (12.7) mm.</p> <i>Geographical distribution</i> <p>Sumatra and Malay Peninsula.</p> <i>Etymology</i> <p> The specific epithet is derived from the Latin <i>maculosus</i> denoting spotted, dappled (Brown 1956, p. 742). The name is to be treated as adjective.</p> <i>Differential diagnosis</i> <p> This species present a face entirely yellow, not pollinose, frons with a dark macula on lunule, alula very narrow, and the scutellum yellow with a medial, dark macula. This taxon is similar to <i>A. tinctiventris</i>, but it differs in the following characters: alula narrow (<i>A. tinctiventris</i> has the alula broader than costal cell), frons and face largely shiny, and yellow markings on tergum 3.</p> <i>Type locality</i> <p> Indonesia: Sumatra, Bukittinggi, Fort de Kock, 0°18 <i>’</i> S, 100°20 <i>ʹ</i> E (de Jong 2000).</p> <i>Material examined</i> <p> Type material. <i>Holotype</i>, male, deposited in the Naturalis Biodiversity Center (Leiden, The Netherlands) and labelled: <i>‘</i> Fort de Kock // (Sumatra) 920 M. // 1925 // leg. E. Jacobson <i>’</i>, <i>‘ Baccha</i> // <i>Loriae Meij’</i>, <i>‘</i> ♂ <i>’</i>, <i>‘</i> HOLOTYPE // <i>Asiobaccha</i> // <i>maculosa</i> // <i>des. X. Mengual 2014’</i> [red] (specimen photographed). <i>Paratypes</i>: INDONESIA: Sumatra, Bukittinggi, Fort de Kock, 0°18 <i>’</i> S, 100°20 <i>’</i> E, 1925, E. Jacobson [1♀, RMNH] (specimen photographed); Sumatra, west coast, Tandjunggadang, 1000 m, November 1925, E. Jacobson [1♀, ZFMK, ZFMKDIP 00011937]. MALAYSIA: Pahang, Cameron <i>’</i> s Highlands, 3500 ft., 26 May 1931, H.T. Pagden [1♂, USNM, USNMENT00890798].</p> <i>Remarks</i> <p> The type material of <i>Asiobaccha maculosa</i> was identified as <i>Baccha loriae</i> Meijere most probably by Pieter H. van Doesburg (Senior). This conclusion by Herman de Jong and Ben Brugge (RMNH) was made after a handwriting comparison with the handwriting on labels of species described by van Doesburg. Originally a coleopterist, van Doesburg started to work on the Syrphidae during the Second World War. He identified remaining unsorted material in the Amsterdam Syrphidae collection, and it must have been in the early 1940s that the identification labels were attached (2014 e-mail from H. de Jong to author).</p> <p> The type material of <i>A. maculosa</i> does not match the original description of <i>Baccha loriae</i>. Meijere clearly stated that the scutellum was uniform in colour (de Meijere 1908, p. 319, key couplet 7) and the abdomen had no yellow markings (de Meijere 1908, p. 319, key couplet 8). The paratypes of <i>A. maculosa</i>, two females and a male, have no alula. After checking the male genitalia and all other external morphological characters, the author could not find any difference except the absence of the alula. Therefore, the author assumes the loss of the alula due to preservation conditions as this has occurred with the lectotype of <i>A. virtuosa</i>.</p> <p> The Malayan specimen in the USNM was identified as <i>Episyrphus 74–27</i> Thompson, in litt.</p>Published as part of <i>Mengual, Ximo, 2016, A taxonomic revision of the genus Asiobaccha Violovitsh (Diptera: Syrphidae), pp. 2585-2645 in Journal of Natural History 50</i> on pages 2607-2609, DOI: 10.1080/00222933.2016.1206634, <a href="http://zenodo.org/record/3994636">http://zenodo.org/record/3994636</a>
Asiobaccha maculosa Mengual & Thompson, sp. nov.
No full text<i>Asiobaccha maculosa</i> Mengual & Thompson sp. nov. <p>(Figures 6c, d, f, 12e)</p> <i>Description</i> <p> <i>Male: Head.</i> Face with facial tubercle, yellow, yellow pilose; gena yellow, slightly white pollinose posteriorly; lunule black; frons yellow with a medial, black macula pointing backwards, yellow pilose, without pollinosity; vertical triangle narrow, black, yellow pilose, white pollinose posteriorly; antenna yellow-brown, yellow pilose; arista brown, bare; eye bare, holoptic; occiput white pollinose, yellow pilose (Figure 6f).</p> <p> <i>Thorax.</i> Scutum brown to black, with short, yellow pile; mesonotal fringe absent; postpronotum yellow, bare, white pollinose; notopleuron yellow, slightly white pollinose, yellow pilose; postalar callus lighter in background colour; scutellum yellow with a posteromedial black macula, yellow pilose, subscutellar fringe absent (Figure 6c, d). Pleuron yellow, katatergum and anatergum darker, brownish, yellow pilose; metaepisternum yellow pilose ventrad to spiracle; metasternum bare; calypter yellow; plumula very short, yellow; halter: pedicel yellow, capitulum brown; posterior spiracular fringes yellow. <i>Wing</i>: membrane hyaline; stigma, costal cell and R1 yellow; microtrichose, except cell BM and CuP very basally. Alula present, rectangular, narrower than costal cell, microtrichose. <i>Legs</i>: completely yellow, except metafemur yellow dorsally and dark brown ventrally, with a dark subapical annulus (ring), metatibia yellow with a medial dark annulus.</p> <p> <i>Abdomen.</i> Petiolate, unmargined. Tergum 1 yellow, yellow pilose; tergum 2 mostly dark, dark brown to black, with a basal yellow fascia (two basal, triangular yellow maculae joined medially) and two lateral yellow maculae, yellow and black pilose; tergum 3 black with two medial, rectangular, large yellow maculae not joined medially reaching lateral margins; tergum 4 black with two submedial, yellow fasciate maculae reaching anterior margin; tergum 5 black with two anteromedial yellow maculae; terga 4 and 5 with posterior margin yellowish (Figure 6c, d); sterna 1 <i>–</i> 3 yellowish, sternum 3 with a black fascia, and sterna 4 and 5 dark.</p> <p> <i>Female.</i> Similar to male except normal sexual dimorphism and as follows: lunule black; frons yellow laterally on basal 1/2 with a medial, black vittae joining the black area on posterior 1/2, shiny on basal 1/2 and yellow pollinose on posterior 1/2 and ocellar triangle. The pollinose area on posterior 1/2 of the frons has a thin, medial shiny vitta (Figure 12e). Both female paratypes lack the alula, but this might be due to preservation conditions in author <i>’</i> s opinion.</p> <p> <i>Length (N = 3).</i> Body, 12.0 <i>–</i> 14.0 (13.2) mm; wing, 12.5 <i>–</i> 13.2 (12.7) mm.</p> <i>Geographical distribution</i> <p>Sumatra and Malay Peninsula.</p> <i>Etymology</i> <p> The specific epithet is derived from the Latin <i>maculosus</i> denoting spotted, dappled (Brown 1956, p. 742). The name is to be treated as adjective.</p> <i>Differential diagnosis</i> <p> This species present a face entirely yellow, not pollinose, frons with a dark macula on lunule, alula very narrow, and the scutellum yellow with a medial, dark macula. This taxon is similar to <i>A. tinctiventris</i>, but it differs in the following characters: alula narrow (<i>A. tinctiventris</i> has the alula broader than costal cell), frons and face largely shiny, and yellow markings on tergum 3.</p> <i>Type locality</i> <p> Indonesia: Sumatra, Bukittinggi, Fort de Kock, 0°18 <i>’</i> S, 100°20 <i>ʹ</i> E (de Jong 2000).</p> <i>Material examined</i> <p> Type material. <i>Holotype</i>, male, deposited in the Naturalis Biodiversity Center (Leiden, The Netherlands) and labelled: <i>‘</i> Fort de Kock // (Sumatra) 920 M. // 1925 // leg. E. Jacobson <i>’</i>, <i>‘ Baccha</i> // <i>Loriae Meij’</i>, <i>‘</i> ♂ <i>’</i>, <i>‘</i> HOLOTYPE // <i>Asiobaccha</i> // <i>maculosa</i> // <i>des. X. Mengual 2014’</i> [red] (specimen photographed). <i>Paratypes</i>: INDONESIA: Sumatra, Bukittinggi, Fort de Kock, 0°18 <i>’</i> S, 100°20 <i>’</i> E, 1925, E. Jacobson [1♀, RMNH] (specimen photographed); Sumatra, west coast, Tandjunggadang, 1000 m, November 1925, E. Jacobson [1♀, ZFMK, ZFMKDIP 00011937]. MALAYSIA: Pahang, Cameron <i>’</i> s Highlands, 3500 ft., 26 May 1931, H.T. Pagden [1♂, USNM, USNMENT00890798].</p> <i>Remarks</i> <p> The type material of <i>Asiobaccha maculosa</i> was identified as <i>Baccha loriae</i> Meijere most probably by Pieter H. van Doesburg (Senior). This conclusion by Herman de Jong and Ben Brugge (RMNH) was made after a handwriting comparison with the handwriting on labels of species described by van Doesburg. Originally a coleopterist, van Doesburg started to work on the Syrphidae during the Second World War. He identified remaining unsorted material in the Amsterdam Syrphidae collection, and it must have been in the early 1940s that the identification labels were attached (2014 e-mail from H. de Jong to author).</p> <p> The type material of <i>A. maculosa</i> does not match the original description of <i>Baccha loriae</i>. Meijere clearly stated that the scutellum was uniform in colour (de Meijere 1908, p. 319, key couplet 7) and the abdomen had no yellow markings (de Meijere 1908, p. 319, key couplet 8). The paratypes of <i>A. maculosa</i>, two females and a male, have no alula. After checking the male genitalia and all other external morphological characters, the author could not find any difference except the absence of the alula. Therefore, the author assumes the loss of the alula due to preservation conditions as this has occurred with the lectotype of <i>A. virtuosa</i>.</p> <p> The Malayan specimen in the USNM was identified as <i>Episyrphus 74–27</i> Thompson, in litt.</p>Published as part of <i>Mengual, Ximo, 2016, A taxonomic revision of the genus Asiobaccha Violovitsh (Diptera: Syrphidae), pp. 2585-2645 in Journal of Natural History 50</i> on pages 2607-2609, DOI: 10.1080/00222933.2016.1206634, <a href="http://zenodo.org/record/3994636">http://zenodo.org/record/3994636</a>
Sobre el pintor Paolo da San Leocadio
No full textL’autor analitza la relació de mecenatge entre la família vila-reialenca dels Montull i Paolo da San Leocadio i qüestiona algunes de les atribucions efectuades al pintor per Ximo Company en la seua recent monografia.The author analyzes the patronage relationship between the Vilareial’s family Montull and Paolo da San Leocadio and questions some of the attributions to the painter made by Ximo Company in his recent monograph
