Design and off-design performance of a high temperature heat pump with ejector

Publikation: Beitrag in Buch oder TagungsbandVortrag mit Beitrag in Tagungsband

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.
OriginalspracheEnglisch
Titel4th High-temperature Heat Pump Symposium: Book of Presentations
PublikationsstatusVeröffentlicht - 2024
VeranstaltungHigh Temperature Heat Pump Symposium 2024 - Kopenhagen, Dänemark
Dauer: 23 Jan. 202424 Jan. 2024
https://www.hthp-symposium.org/hthp-symposium-2024/

Konferenz

KonferenzHigh Temperature Heat Pump Symposium 2024
Land/GebietDänemark
StadtKopenhagen
Zeitraum23/01/2424/01/24
Internetadresse

Research Field

  • Efficiency in Industrial Processes and Systems

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