K. Kaygusuz, ENERGY AND ECONOMIC COMPARISONS OF AIR-TO-AIR HEAT-PUMPS AND CONVENTIONAL HEATING-SYSTEMS FOR THE TURKISH CLIMATE, Applied energy, 45(3), 1993, pp. 257-267
In order to investigate the energy performance of air-to-air heat Pump
s for residential heating in the Black Sea region of Turkey, an experi
mental set-up was constructed. An electrically driven air-to-air heat
pump was used for heating a laboratory building with a floor of 75 m2.
The experimental results were obtained for December, January, Februar
y, March, April and May of the 1991-2 heating season. The experimental
ly obtained results are used to calculate the heat pump's coefficient
of performance (COP). Actual experimental performance data were used t
o generate third-order polynomials relating the heat pump's COP to the
outdoor air temperature. Also, economic comparisons were made of the
heat pump's performance with electrical resistance, oil, gas and coal-
fired heating systems, using an annualised life-cycle costing method.
This showed that the heat pump offers economic advantages over the oil
and coal-fired boiler systems, but is not an economic alternative to
the gas-fired heating system. Because the unit price of the gas is 3.8
4 times less than that for electricity, to become competitive with a g
as-fired boiler, either the capital cost of the heat pump must be subs
tantially reduced or its seasonal COP increased by about 60%: it shoul
d also be driven by a gas engine rather than an electric engine.