Main content:

Efficient heat utilisation through new technologies

Thermally-driven micro cooling systems, latent heat and cold storage facilities, ORC technologies or thermally-driven heat pumps: The use of modern building technology and the development of distribution technology and system components represent important aspects of the EnEff:Wärme research initiative - just like intelligent control and measuring technologies. Together, they form a fundamentally new heat supply concept.

Sort according to:

Functional prototype, 160 kW (Hummel)
Projektstatus: Phase 4
EnEff:Wärme - Forschung für energieeffiziente Wärme- und Kältenetze

Field test of absorption cooling technology for trigeneration systems

As part of a nationwide field test, approx. 15 absorption cooling systems with a total capacity of 1.25 MW were installed for a wide range of applications and tested in operation. These systems are based on absorption chillers with nominal cooling capacities of 50 kW (Biene – bee) or 160 kW (Hummel – bumblebee), which were developed in a forerunner project as functional prototypes.

Zu sehen ist ein Verdampfer ORC-Prozess mit Abgaswärmezufuhr aus einem Gasmotor
Projektstatus: Phase 4
EnEff:Wärme - Forschung für energieeffiziente Wärme- und Kältenetze

Field testing of ORC processes

ORC processes can be used to convert previously unharnessed waste heat into valuable effective energy in the form of electricity. The goal of this project is to use ORC processes to generate between 20 and 120 kWel of additional electricity from the heat contained in exhaust gases and cooling water from motor CHP plants and, in doing so, to improve the energy balance of these motors.

2-generation function pattern 50 kW
Projektstatus: Phase 3
EnEff:Wärme - Forschung für energieeffiziente Wärme- und Kältenetze

Absorption cooling system uses district heating and solar low temperature sources

Researchers from TU Berlin and ZAE Bayern have developed an absorption cooling system with a cooling capacity of 50 kW and optimised it under operating conditions with Vattenfall Europe Wärme. A functional model of a 160-kW system is to be tested and both system types are to be prepared for market launch by 2012.

Projektstatus: Phase 3
EnEff:Wärme - Forschung für energieeffiziente Wärme- und Kältenetze

ORC steam expansion engine utilises waste heat for the highly efficient generation of electricity

A newly developed steam expansion engine uses low-temperature heat with ORC technology. As part of a field test it is intended to show how four ORC systems can utilise waste heat flows to generate electricity in a highly efficient manner.

Projektstatus: Phase 3
EnEff:Wärme - Forschung für energieeffiziente Wärme- und Kältenetze

LowEx systems – Widespread application of low-temperature systems

The aim of the project is to develop and optimise low-temperature systems in buildings. The research work is aimed at providing thermal energy without burning fossil fuels by using existing low-temperature reservoirs.