Abstract
We are aiming to develop a high temperature heat pump using R1233zde as refrigerant by using an ejector as work recovery measure instead of an expansion valve. Based on the design condition at 50°C source and 130°C sink temperature and about 70kW heating capacity, we show that the ejector efficiency can remain within acceptable limits even under deviating operating conditions by using a variable bypass instead of a rigid ejector geometry. The ejector efficiency can thus be kept high from about 30% in the design condition over a wide operating range. The COP increase compared to a conventional refrigeration circuit is approx. 30% in the design condition.
Originalsprache | Englisch |
---|---|
Titel | 4th High-temperature Heat Pump Symposium: Book of Presentations |
Publikationsstatus | Veröffentlicht - 2024 |
Veranstaltung | High Temperature Heat Pump Symposium 2024 - Kopenhagen, Dänemark Dauer: 23 Jan. 2024 → 24 Jan. 2024 https://www.hthp-symposium.org/hthp-symposium-2024/ |
Konferenz
Konferenz | High Temperature Heat Pump Symposium 2024 |
---|---|
Land/Gebiet | Dänemark |
Stadt | Kopenhagen |
Zeitraum | 23/01/24 → 24/01/24 |
Internetadresse |
Research Field
- Efficiency in Industrial Processes and Systems