Prefab heat exchanger and heat pump module for heat recovery from waste water in existing buildings - phase 1
The purpose is to develop and test a new efficient solution, that will constribute to recovery large quantities of waste heat which today is lost in the buildings drainage.
The purpose is to develop and test a new efficient solution, that will constribute to recovery large quantities of waste heat which today is lost in the buildings drainage. The project will develop a optimised design and control system for prefab as in the followering phase 2 will results in a standard solution for supply for tower blocks. The technology is based on the use of an optimised drain component through wich a heat pump, heat exchanger and cleanse system can efficiently be integrated and with a low impact on the building. The solution is best suited for existing tower blocks and institution buildings where the heating of use water is around 25 % of the heating need, that is up to 50 % in new or refurbished buildings. With this new tehcnology will almost all waste heat be recovered for heating the use water for a low energy consumption. The project will develop, test and demonstrate, refine and improve the penetration of the solution under danish conditions, hereby regulation and pratical challanges. There will be measurements on existing pilot system for demonstrate the potential and investigate the consumption patterns and persectives to use it in a future smart grid structure.
Phase 1 and in the followering phase 2 will the most promising solution (solutions) be demonstrated as a prototype contemporary with the project industrial partner Grundfos will based on the results consider to manufacture the solution.
The project objective has been to develop a technology for heat recovery from wastewater with use of separation system aimed at existing multi apartment buildings. Recovery of heat loss from wastewater has not been considered much earlier, but there is a great potential for energy savings as energy for production of DHW represent 25-50 % of the total heating demand for existing and new buildings. This is an significant amount of the added heating energy that will leave the building through the waste water system.
The project is based on a system with a wastewater storage e.g. as a prefabricated wastewater manhole with pump as one of Grundfos or as modification of an existing manhole. In the manhole, a special heat exchanger is installed and coupled to a heat pump, which can produce domestic hot water for a domestic hot water tank. The buffers in the waste water tank and the domestic hot water tank enables the heat pump to be operated independent of the demand of domestic hot water, which introduces flexibility and use of a smart grid ready control strategy.
Key figures
Category
Participants
| Partner | Subsidy | Auto financing |
|---|---|---|
| Teknologisk Institut | ||
| GRUNDFOS A/S | ||
| Danfoss A/S | ||
| Brabrand Boligforening | ||
| GEO HEAT EX ApS |
