Numerical and Experimental Study of 120 °C Heat Pump Using a Scroll Compressor

Numerous industrial process require hot air or hot water at temperatures below 120 ℃ and diesel or LPG-fired boilers are often used to generate it. The use of a high-temperature heat pump can help reduce emissions and lower the CO2 footprint by eliminating these fired sources. This study reports on the development and continuous operation of a high temperature heat pump with a heating capacity of 60 kW that generates hot water at 120 ℃ at a heating COP of 2.27. Using this hot water, hot air at 100 ℃ is generated using a heat exchanger. The high temperature heat pump increased carbon emissions by 20.3% compared to diesel, based on India's emission factor of 790 gCO2/kWh. However, considering the emission factor of the European Union, the high temperature heat pump has the potential to reduce carbon emissions by 57.8%.