FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W1572177601> ?p ?o ?g. }

• W1572177601 abstract "The European standard EN15450 states that the Coefficient of Performance (COP) target range for a Ground Source Heat Pump (GSHP) installation should lie within the range of 3.5 to 4.5; when used for heating a building, and a typical Air-Source Heat Pump (ASHP) has a COP of 2.0 to 3.0 at the beginning of the heating season and then decrease gradually as the ambient air becomes cooler, whereas a typical GSHP is in the range of 3.5 –4.0, also at the beginning of the heating season and then decrease gradually as heat is drawn from the ground. For these reasons, in the middle of winter, when the COP drop, the heat pumps can generally only be considered as a ‘pre-heating’ method for producing higher temperature heat such as domestic hot water. In addition soil presents certain difficulties, due to the high cost of drilling to position coils in the ground compare to air source, although frost formation on the evaporator in winter limits also limit the use of air source. Though technology advances or are needed to overcome those issues. The aims of this project, therefore, were firstly to reduce the drilling length of the ground heat exchanger of the ground source heat pumps and to maintain high COPs of the air and ground source heat pumps from beginning to the end of the heating season; and secondly to develop a viable alternative evaporator for air source heat pumps to reduce frost formation during winter. These were achieved; the first aim through the combination of ground loops with solar-air panels or solar roof/collectors roof to ground heat exchangers loops to reduce the length of the boreholes, and to reduce the freezing effects around the boreholes, hence increase or maintain a constant temperature during heating season. The second aim was also achieved through development and validation of novel air source heat pump evaporator, using Direct Expansion (DX) black flat plate absorber or/and vacuum tubes for frost reduction. In this thesis, in order to achieve the above aims; four aspects of investigations have been independently investigated as following:1-Preliminary investigation on Direct Expansion (DX) Solar Source Heat Pump system. 2-Investigation on the performance of the DX- PV/heat pipe heat pump system to reduce frost and enhance the COP of the air source heat pumps,3-A small scale testing on the heat injection on energy piles for residential buildings for earth charging by means of solar roof/collectors 4-A field trial testing of the performance of the combination of solar-air thermal collectors with conventional GSHP with shorter ground heat exchangers (48m deep) to charge the ground and reduce freezing effects around the piles after heating cycle. From the simulation results, the novel PV/hp-HP system has a COP ranging from 4.65 to 6.16 with an average of 5.35. The condenser capacity ranging from 33 to 174 W would provide the heat source for space heating and domestic hot water. The energy performance of the novel PV/hp-heat pump was not as good as expected due to the low solar radiation. It should be much better in some low latitude locations with better solar radiation.The results of this thesis have shown that the length of ground source boreholes could be considerably reduce by about 60% compare to conventional boreholes using a combination of solar-air collectors with the GSHP and the average COP of 3.7 was achieved." @default.
• W1572177601 created "2016-06-24" @default.
• W1572177601 creator A5013404794 @default.
• W1572177601 date "2011-07-18" @default.
• W1572177601 modified "2023-09-23" @default.
• W1572177601 title "Investigations of novel heat pump systems for low carbon homes" @default.
• W1572177601 cites W1576980185 @default.
• W1572177601 cites W1592622566 @default.
• W1572177601 cites W1965958350 @default.
• W1572177601 cites W1971672342 @default.
• W1572177601 cites W1973373408 @default.
• W1572177601 cites W1980586066 @default.
• W1572177601 cites W1988713967 @default.
• W1572177601 cites W1990135125 @default.
• W1572177601 cites W2004923520 @default.
• W1572177601 cites W2010551497 @default.
• W1572177601 cites W2014526938 @default.
• W1572177601 cites W2029213322 @default.
• W1572177601 cites W2030034165 @default.
• W1572177601 cites W2035801529 @default.
• W1572177601 cites W2037005369 @default.
• W1572177601 cites W2039707103 @default.
• W1572177601 cites W2044864109 @default.
• W1572177601 cites W2061340769 @default.
• W1572177601 cites W2077428313 @default.
• W1572177601 cites W2091833353 @default.
• W1572177601 cites W2094760074 @default.
• W1572177601 cites W2095007248 @default.
• W1572177601 cites W2133859605 @default.
• W1572177601 cites W2144222243 @default.
• W1572177601 cites W2163121678 @default.
• W1572177601 cites W2170980341 @default.
• W1572177601 cites W2172132861 @default.
• W1572177601 cites W3016164285 @default.
• W1572177601 cites W3044172150 @default.
• W1572177601 cites W646093319 @default.
• W1572177601 cites W1487559290 @default.
• W1572177601 hasPublicationYear "2011" @default.
• W1572177601 type Work @default.
• W1572177601 sameAs 1572177601 @default.
• W1572177601 citedByCount "1" @default.
• W1572177601 countsByYear W15721776012014 @default.
• W1572177601 crossrefType "dissertation" @default.
• W1572177601 hasAuthorship W1572177601A5013404794 @default.
• W1572177601 hasConcept C107706546 @default.
• W1572177601 hasConcept C116915560 @default.
• W1572177601 hasConcept C127413603 @default.
• W1572177601 hasConcept C13119800 @default.
• W1572177601 hasConcept C144179057 @default.
• W1572177601 hasConcept C153294291 @default.
• W1572177601 hasConcept C187949908 @default.
• W1572177601 hasConcept C205649164 @default.
• W1572177601 hasConcept C2776461528 @default.
• W1572177601 hasConcept C39432304 @default.
• W1572177601 hasConcept C44044945 @default.
• W1572177601 hasConcept C548081761 @default.
• W1572177601 hasConcept C78519656 @default.
• W1572177601 hasConcept C91311341 @default.
• W1572177601 hasConceptScore W1572177601C107706546 @default.
• W1572177601 hasConceptScore W1572177601C116915560 @default.
• W1572177601 hasConceptScore W1572177601C127413603 @default.
• W1572177601 hasConceptScore W1572177601C13119800 @default.
• W1572177601 hasConceptScore W1572177601C144179057 @default.
• W1572177601 hasConceptScore W1572177601C153294291 @default.
• W1572177601 hasConceptScore W1572177601C187949908 @default.
• W1572177601 hasConceptScore W1572177601C205649164 @default.
• W1572177601 hasConceptScore W1572177601C2776461528 @default.
• W1572177601 hasConceptScore W1572177601C39432304 @default.
• W1572177601 hasConceptScore W1572177601C44044945 @default.
• W1572177601 hasConceptScore W1572177601C548081761 @default.
• W1572177601 hasConceptScore W1572177601C78519656 @default.
• W1572177601 hasConceptScore W1572177601C91311341 @default.
• W1572177601 hasLocation W15721776011 @default.
• W1572177601 hasOpenAccess W1572177601 @default.
• W1572177601 hasPrimaryLocation W15721776011 @default.
• W1572177601 hasRelatedWork W1486118528 @default.
• W1572177601 hasRelatedWork W1700760622 @default.
• W1572177601 hasRelatedWork W2000289437 @default.
• W1572177601 hasRelatedWork W2024011656 @default.
• W1572177601 hasRelatedWork W2026315484 @default.
• W1572177601 hasRelatedWork W2037701730 @default.
• W1572177601 hasRelatedWork W2045564552 @default.
• W1572177601 hasRelatedWork W2151205473 @default.
• W1572177601 hasRelatedWork W2162279610 @default.
• W1572177601 hasRelatedWork W2164740473 @default.
• W1572177601 hasRelatedWork W2202736807 @default.
• W1572177601 hasRelatedWork W2470302498 @default.
• W1572177601 hasRelatedWork W2521393836 @default.
• W1572177601 hasRelatedWork W2911086318 @default.
• W1572177601 hasRelatedWork W3008229389 @default.
• W1572177601 hasRelatedWork W3046972973 @default.
• W1572177601 hasRelatedWork W3080264821 @default.
• W1572177601 hasRelatedWork W3198599815 @default.
• W1572177601 hasRelatedWork W849201308 @default.
• W1572177601 hasRelatedWork W895322861 @default.
• W1572177601 isParatext "false" @default.
• W1572177601 isRetracted "false" @default.
• W1572177601 magId "1572177601" @default.
• W1572177601 workType "dissertation" @default.