Paper No 139 – Modeling of Megawatt R1233zd(E) High Temperature Heat Pump System – 13th IEA Heat Pump Conference, Jeju, Korea
With the enactment of the Kigali amendment, the HFCs are falling into disuse and HFOs are proposed to be studied for replacement. R1233zd(E) as a new HTHP working fluid with low GWP has yet to be further developed. The HTHP is an ideal replacement of boiler to supply heat in industry. However, the construction of megawatt unit usually has a huge investment and may not achieve the desired results. Therefore, a mathematical model is imperative to conduct the performance prediction. This paper proposed a model and it can effectively verify the feasibility of the megawatt R1233zd(E) HTHP system, which recovers 60-80? waste heat and outputs 100-160? pressured water. The conditions of condensation temperature from 90-160? with temperature lift of 50K, were calculated and the COP changed in 3.0-3.8. When evaporating at 60? and condensing at 110?, the heat capacity was up to 1.95MW with COP over 3.8. From the results, R1233zd(E) is a reliable refrigerant for both high temperature output and high system efficiency, which will be a direction for future experiments.