J. Ruschenburg, S. Herkel, and H. M. Henning, A statistical analysis on market-available solar thermal heat pump systems, Solar Energy, vol.95, pp.79-89, 2013.
DOI : 10.1016/j.solener.2013.06.005

E. Frank, M. Haller, S. Herkel, and J. Ruschenburg, Systematic Classification of Combined Solar Thermal and Heat Pump Systems, Proceedings of the EuroSun 2010 Conference
DOI : 10.18086/eurosun.2010.14.04

M. Haller and E. Frank, On the Potential of Using Heat From Solar Thermal Collectors for Heat Pump Evaporators, Proceedings of the ISES Solar World Congress 2011, 2011.
DOI : 10.18086/swc.2011.26.06

X. Wang, J. Yu, and M. Xing, Performance analysis of a new ejector enhanced vapor injection heat pump cycle. Energy Conversion and Management, pp.242-248, 2015.

C. Baek, J. Heo, J. Jung, E. Lee, and Y. Kim, Effects of vapor injection techniques on the heating performance of a CO2 heat pump at low ambient temperatures, International Journal of Refrigeration, vol.43, pp.26-35, 2014.
DOI : 10.1016/j.ijrefrig.2014.03.009

A. Redón, P. E. Navarro, M. Pitarch, M. J. Gonzálvez, and J. M. Corberán, Analysis and optimization of subcritical two-stage vapor injection heat pump systems, Applied Energy, vol.124, pp.231-240, 2014.
DOI : 10.1016/j.apenergy.2014.02.066

Y. Ko, S. Park, S. Jin, B. Kim, and J. H. Jeong, The selection of volume ratio of two-stage rotary compressor and its effects on air-to-water heat pump with flash tank cycle, Applied Energy, vol.104, pp.187-196, 2013.
DOI : 10.1016/j.apenergy.2012.11.021

C. W. Roh and M. S. Kim, Comparison of the heating performance of an inverter-driven heat pump system using R410A vapor-injection into accumulator and compressor, International Journal of Refrigeration, vol.35, issue.2, pp.434-444, 2012.
DOI : 10.1016/j.ijrefrig.2011.10.013

J. Heo, M. W. Jeong, C. Baek, and Y. Kim, Comparison of the heating performance of air-source heat pumps using various types of refrigerant injection, International Journal of Refrigeration, vol.34, issue.2, pp.444-453, 2011.
DOI : 10.1016/j.ijrefrig.2010.10.003

D. Col, D. Azzolin, M. Benassi, G. Mantovan, and M. , Energy efficiency in a ground source heat pump with variable speed drives, Energy and Buildings, vol.91, pp.105-114, 2015.
DOI : 10.1016/j.enbuild.2014.12.048

A. A. Safa, A. S. Fung, and R. Kumar, Performance of two-stage variable capacity air source heat pump: Field performance results and TRNSYS simulation, Energy and Buildings, vol.94, pp.80-90, 2015.
DOI : 10.1016/j.enbuild.2015.02.041

G. Mader and H. Madani, Capacity control in air???water heat pumps: Total cost of ownership analysis, Energy and Buildings, vol.81, pp.296-304, 2014.
DOI : 10.1016/j.enbuild.2014.06.029

H. Madani, J. Claesson, and P. Lundqvist, Capacity control in ground source heat pump systems, International Journal of Refrigeration, vol.34, issue.6, pp.1338-1347, 2011.
DOI : 10.1016/j.ijrefrig.2011.05.007

H. Madani, J. Claesson, and P. Lundqvist, Capacity control in ground source heat pump systems part II: Comparative analysis between on/off controlled and variable capacity systems, International Journal of Refrigeration, vol.34, issue.8, pp.1934-1942, 2011.
DOI : 10.1016/j.ijrefrig.2011.05.012

C. K. Lee, Dynamic performance of ground-source heat pumps fitted with frequency inverters for part-load control, Applied Energy, vol.87, issue.11, pp.3507-3513, 2010.
DOI : 10.1016/j.apenergy.2010.04.029

C. Cuevas and J. Lebrun, Testing and modelling of a variable speed scroll compressor, Applied Thermal Engineering, vol.29, issue.2-3, pp.469-478, 2009.
DOI : 10.1016/j.applthermaleng.2008.03.016

F. Karlsson and P. Fahlén, Capacity-controlled ground source heat pumps in hydronic heating systems, International Journal of Refrigeration, vol.30, issue.2, pp.221-229, 2007.
DOI : 10.1016/j.ijrefrig.2006.08.008

W. F. Phillips and R. N. Dave, Effects of Stratification on the Performance of Liquid-Based Solar Heating-Systems. Solar Energy, pp.111-120, 1982.

Z. Lavan and J. Thompson, Experimental study of thermally stratified hot water storage tanks, Solar Energy, vol.19, issue.5, pp.519-524, 1977.
DOI : 10.1016/0038-092X(77)90108-6

E. Andersen, S. Furbo, and J. Fan, Multilayer fabric stratification pipes for solar tanks, Solar Energy, vol.81, issue.10, pp.1219-1226, 2007.
DOI : 10.1016/j.solener.2007.01.008

S. Furbo, E. Andersen, A. Thür, S. L. Jivan, and K. D. Andersen, Performance improvement by discharge from different levels in solar storage tanks, Solar Energy, vol.79, issue.5, pp.431-439, 2005.
DOI : 10.1016/j.solener.2005.01.005

E. Andersen, U. Jordan, L. J. Shah, and S. Furbo, Investigation of the Solvis stratification inlet pipe for solar tanks, Proc. of the EuroSun 2004 Conference

S. Knudsen and S. Furbo, Thermal stratification in vertical mantle heat-exchangers with application to solar domestic hot-water systems, Applied Energy, vol.78, issue.3, pp.257-272, 2004.
DOI : 10.1016/j.apenergy.2003.09.002

C. Bales and T. Persson, External DHW units for solar combisystems, Solar Energy, vol.74, issue.3, pp.193-204, 2003.
DOI : 10.1016/S0038-092X(03)00158-0

J. H. Davidson and D. A. Adams, Fabric Stratification Manifolds for Solar Water Heating, Journal of Solar Energy Engineering, vol.116, issue.3, pp.130-136, 1994.
DOI : 10.1115/1.2930071

J. Glembin and G. Rockendorf, Simulation and evaluation of stratified discharging and charging devices in combined solar thermal systems, Solar Energy, vol.86, issue.1, pp.407-420, 2012.
DOI : 10.1016/j.solener.2011.10.013

M. Y. Haller, Combined solar and pellet heating systems-Improvement of energy efficiency by advanced heat storage techniques, hydraulics, and control, 2010.

A. Thür, Compact solar combisystem, 2007.

K. Lorenz, C. Bales, and T. Persson, Evaluation of solar thermal combisystems for the Swedish climate

M. Haller, R. Haberl, I. Mojic, and E. Frank, Hydraulic Integration and Control of Heat Pump and Combi-storage: Same Components, Big Differences, Energy Procedia, vol.48, pp.571-580, 2014.
DOI : 10.1016/j.egypro.2014.02.067

S. Poppi and C. Bales, Influence of Hydraulics and Control of Thermal Storage in Solar Assisted Heat Pump Combisystems, Energy Procedia, vol.48, pp.946-955, 2014.
DOI : 10.1016/j.egypro.2014.02.108

S. E. Kalnaes and B. P. Jelle, Vacuum insulation panel products: A state-of-the-art review and future research pathways, Applied Energy, vol.116, pp.355-375, 2014.
DOI : 10.1016/j.apenergy.2013.11.032

B. Fuchs, K. Hofbeck, and M. Faulstich, Vacuum insulation panels ? A promising solution for high insulated tanks. Energy Procedia, pp.424-427, 2012.

J. Fernández-seara, C. Piñeiro, J. A. Dopazo, and F. Fernandes, Experimental analysis of a direct expansion solar assisted heat pump with integral storage tank for domestic water heating under zero solar radiation conditions. Energy Conversion and Management, pp.1-8, 2012.

P. Chaiwongsa and W. Duangthongsuk, Hot Water Making Potential Using of a Conventional Air-Conditioner as an Air-Water Heat Pump, Procedia Engineering, vol.8, pp.165-170, 2011.
DOI : 10.1016/j.proeng.2011.03.030

J. J. Guo, J. Y. Wu, R. Z. Wang, and S. Li, Experimental research and operation optimization of an air-source heat pump water heater, Applied Energy, vol.88, issue.11, pp.4128-4138, 2011.
DOI : 10.1016/j.apenergy.2011.04.012

Y. M. Han, R. Z. Wang, and Y. J. Dai, Thermal stratification within the water tank, Renewable and Sustainable Energy Reviews, vol.13, issue.5, pp.1014-1026, 2009.
DOI : 10.1016/j.rser.2008.03.001

J. Zhang, R. Z. Wang, and J. Wu, System optimization and experimental research on air source heat pump water heater, Applied Thermal Engineering, vol.27, issue.5-6, pp.1029-1035, 2007.
DOI : 10.1016/j.applthermaleng.2006.07.031

S. Colclough and T. Mcgrath, Net energy analysis of a solar combi system with Seasonal Thermal Energy Store, Applied Energy, vol.147, pp.611-617, 2015.
DOI : 10.1016/j.apenergy.2015.02.088

S. R. Asaee, V. I. Ugursal, I. Beausoleil-morrison, and N. Ben-abdallah, Preliminary study for solar combisystem potential in Canadian houses, Applied Energy, vol.130, pp.510-518, 2014.
DOI : 10.1016/j.apenergy.2013.12.048

S. J. Sterling and M. R. Collins, Feasibility analysis of an indirect heat pump assisted solar domestic hot water system, Applied Energy, vol.93, pp.11-18, 2012.
DOI : 10.1016/j.apenergy.2011.05.050

W. W. Weiss, Solar heating systems for houses: a design handbook for solar combisystems

. Earthscan, Life-cycle cost analysis (LCCA) National Institute of Building Sciences, An Authoritative Source of Innovative Solutions for the Built Environment, 1090.

S. Colclough and P. Griffiths, Financial analysis of an installed small scale seasonal thermal energy store, Renewable Energy, pp.422-428, 2016.

S. K. Chaturvedi, V. D. Gagrani, and T. M. Abdel-salam, Solar-assisted heat pump ? A sustainable system for low-temperature water heating applications. Energy Conversion and Management, pp.550-557, 2014.

J. N. Hin and R. Zmeureanu, Optimization of a residential solar combisystem for minimum life cycle cost, energy use and exergy destroyed, Solar Energy, vol.100, pp.102-113, 2014.

J. N. Hin, Life cycle optimization of a residential solar combisystem for minimum cost, energy use and exergy destroyed, 2013.

M. Leckner and R. Zmeureanu, Life cycle cost and energy analysis of a Net Zero Energy House with solar combisystem, Applied Energy, vol.88, issue.1, pp.232-241, 2011.
DOI : 10.1016/j.apenergy.2010.07.031

. Macsheep, MacSheep -New Materials and Control for a next generation of compact combined Solar and heat pump systems with boosted energetic and exergetic performance, European Union's Seventh Framework Programme project, pp.2012-2015

A. Klein, A. Beckman, W. Mitchell, and A. Duffie, TRNSYS 17?a transient system simulation program, 2011.

J. Hadorn, Solar and Heat Pump Systems for Residential Buildings, 2015.
DOI : 10.1002/9783433604830

R. Dott, M. Haller, J. Ruschenburg, F. Ochs, and J. Bony, The Reference Framework for System Simulations of the IEA SHC Task 44 / HPP Annex 38 -Part B: Buildings and Space Heat Load ? A techinical report of subtask C, Report C1 Part B, issue.1, pp.44-82

T. E. Kuhn, K. Fath, C. Bales, M. Gustafsson, R. Nouvel et al., Development of Systemic Packages for Deep Energy Renovation of Residential and Tertiary Buildings including Envelope and Systems -Deliverable 2.3 ? iNSPiRe project reportAvailability-Survey-and-Boundary-Conditions- for-Simulations_WEBSITE.pdf) accessed on, pp.2016-2017, 2015.

C. Bales, J. Betak, M. Broum, D. Chèze, G. Cuvillier et al., Optimized solar and heat pump systems, components and dimensioning -Deliverable 7.3 -MacSheep report, 2015.

U. Eicker, A. Colmenar-santos, L. Teran, M. Cotrado, and D. Borge-diez, Economic evaluation of solar thermal and photovoltaic cooling systems through simulation in different climatic conditions: An analysis in three different cities in Europe, Energy and Buildings, vol.70, pp.207-223, 2014.
DOI : 10.1016/j.enbuild.2013.11.061

P. J. Axaopoulos and E. Fylladitakis, Performance and economic evaluation of a hybrid photovoltaic/thermal solar system for residential applications, Energy and Buildings, vol.65, pp.488-496, 2013.
DOI : 10.1016/j.enbuild.2013.06.027

B. Agrawal and G. N. Tiwari, Life cycle cost assessment of building integrated photovoltaic thermal (BIPVT) systems, Energy and Buildings, vol.42, issue.9, pp.1472-1481, 2010.
DOI : 10.1016/j.enbuild.2010.03.017

S. Kalogirou, Thermal performance, economic and environmental life cycle analysis of thermosiphon solar water heaters, Solar Energy, vol.83, issue.1, pp.39-48, 2009.
DOI : 10.1016/j.solener.2008.06.005

E. Andersen, L. J. Shah, and S. Furbo, Thermal Performance of Danish Solar Combi Systems in Practice and in Theory, Journal of Solar Energy Engineering, vol.126, issue.2, pp.744-749, 2004.
DOI : 10.1115/1.1688381

E. Kaçan, Exergetic optimization of basic system components for maximizing exergetic efficiency of solar combisystems by using response surface methodology, Energy and Buildings, vol.91, pp.65-82, 2015.
DOI : 10.1016/j.enbuild.2015.01.020

Y. M. Haller, B. Perers, C. Bales, J. Paavilainen, A. Dalibard et al., Dynamic Collector Model by Bengt Perers " : Updated Input-Output Reference, 2012.

M. Y. Haller, I. Mojic, E. Frank, M. Kaufmann, L. Lötscher et al., Disturbance of Stratification Caused by Direct Horizontal Inlets into a Water Storage Tank, Proceedings of the EuroSun 2014 Conference
DOI : 10.18086/eurosun.2014.10.13

A. Heinz and Y. M. Haller, Appendix A3-Description of TRNSYS Type 877 by IWT and SPF. Models of Sub-Components and Validation for the IEA SHC Task, 2012.

F. Hengel, A. Heinz, and R. Rieberer, Analysis of an air source heat pump system with speed controlled compressor and vapor injection, Proc. of the IEA Heat Pump Conference 2014

S. Nordlander and . Type, Four way valve, SERC, vol.221, 2007.

S. Poppi, C. Bales, M. Y. Haller, and A. Heinz, Influence of boundary conditions and component size on electricity demand in solar thermal and heat pump combisystems, Applied Energy, vol.162, pp.1062-73, 2016.
DOI : 10.1016/j.apenergy.2015.10.190