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Path: Home » Indice Pubblicazioni » Convegni ATI - Accesso riservato soci CTI » CA - 61 - Perugia 2006 » The heat pump with solar element oper...
Autore: Z. Gapparova, G. Uchkin, H. Rakhimov, T. Tursunov, M. Mirzaev
Collana: CA - 61 - Perugia 2006
Note:
In the opinion of authors the use of heat pump plants operating on solar elements on the objects where medium cold and heat are simultaneously used on the levels of +45°C - 50°C and +80°C seems profitable. Improvement of indices of the plant of combined generation of cold and heat is possible by means of selection of more advanced scheme at the expense of application of solar element.
“The hot box” simple in its design is used as solar element. The mixture of natural gas R290/R600 (propane-butane) being produced in Uzbekistan was used as a coolant for the lower part of the heat pump plant. R142 that is not permitted yet, was used as a coolant for the upper part.
The criterion of effectiveness is not only cooling factor ε and transformation factor φ but also the joint cycle factor offered by Professor A.I. Lavochnik and Professor A.A. Ayupov.
μ=(Qo+Qт)/ΣAL= φ+ε
Qo cold productiveness of the plant;
QT heat productiveness of the plant;
ΣAL value of consumed capacity
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