Details

Autor(en) / Beteiligte

• Grassi, Walter

Titel

Types of Compression Heat Pumps and Their Main Components

Ist Teil von

• Heat Pumps, 2018, p.15-71

Ort / Verlag

Switzerland: Springer International Publishing AG

Erscheinungsjahr

2018

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The main components of compression heat pumps are treated herein. Their salient features, working principles and roles are dealt with, stressing their contribution to heat pumps operation and efficiency. Furthermore, products existing on the market are often referred to in order to allow the interested reader to have, at least, a rough idea of the available equipment, nowadays. Engine driven heat pumps, also named Gas Heat Pumps (GHP) are described in addition to the most commonly used electric heat pumps (EHP). Except for the driving motor, GHPs differ from EHPs both from the thermodynamic point of view, as they interact with three heat sources (they are a three-thermal-system), and for the possibility of using heat recovered by engine cooling. Last but not least, part of this chapter is devoted to describe CO2 heat pumps, due their peculiarity. In fact carbon dioxide has a very low critical temperature and, thus, they operate in hyper-critical condensions in most cases. Due to this a gas cooler is employed instead of a classical condenser.