Question

Д) The use of renewable energy for greenhouse heating in winter and cold days, helps to save fuels and limits the release of greenhouse gases. A ground-source heat pump (with R-22 as refrigerant) may be developed and used for this purpose as shown in the Figure. Design and sketch experimental set-up which you are consider it suitable for this investigation, and list the necessary measurement required to assessment the thermal performance of the heat pump considering the coefficient of performance (COP) parameter for this assessment. Also describe the instruments used in details and show how will represent and report your results.

Answer 1

Anscen: → Sketch of heat pump Setup shown below Gureen house Condenser Comporossa Ground Expansion valve C Cuponlat87 Heat.flor 5 componenti are required for heat pump selup 0) Reforigerant (R-22) (2) Compressor (3) Condenser (4) Expansion Valve (5) Evoperatai Necesary measurement requirements to cop * Ground (G ) and Green house 500m temperatures (Tacom) are used to calculate cop. + Coefficient of performance calculated using below relation cop = Troom_ Toom-Tonound → Setup Instruments : Reforigorant: + Given that, A ground source heat pump with (R-22 as reforigerant) may be developed and used for this purpose * R22 also read as RO22, resemble to R CM-1) On+DP Loheren +P+9 = Qm+2. a chemical formula is Com Hn Fp dq So, m-I = n+1 = 2 p=2 mal na

then Substitute values n+P+9 = amta 1+ 2+9 = 2+2 Hence, chiaio difluoromethane (CHF, I) is the chemical Compressor : * Reforigirant gets heat by the comparend upon getting heated in ground * For sre frigerant circulation compresor helps. Reforigerant gets both pressurized and heated. * Now Refrigerant flow to condenser. Condenser * Gureen house room heated by the hot oreforigerant and Reforigoiart geti - a little coded. of Condenser *5 a heat exchanger. + Condensers are also med n as conditioning, industrial chemical processes * To completely cool down and expand refrigerant further flows to expansion valve k so it can take heat from the ground. Expansion Valve :- * * * Refrigerant gets expands to further cool down in expansion Valve It is a thorottling device. Refrigerant Sleach Me natural slate in eupansion valve. * Now From the ground heat taken by the refrigerant. Evaperata * to get heated up by the heat forom the ground reforigerant flows through evaporate? * Evaperato? Es also a heat exchanger. * Then reaches again to comprend completing circuit is a cyclic pzous.