Energy-savings on industrial cooling systems with use of new hybride air cooler - phase 2 measurements on prototype
The project aim is to develop a hybride cooler, that functions as a dry cooler in the winter and cooling tower during the summer.
The project aim is to develop a hybride cooler, that functions as a dry cooler in the winter and cooling tower during the summer. The energy consumption for a cooling system with a dry cooler and a cooling tower as emissioner of heat are comparable during the winter months. In the summer months a cooling system with a cooling tower as emissioner of heat has a significant lower energy consumption. The explanation is the differences in the temperature between the wet and dry temperature. The wet temperature is lower during the summer months than the dry temperature and the difference is lower in the winter months. The cooling tower operates after the wet temperature. The hybride cooler will have a yearly energy consumption 10 % lower than a dry cooler and the water consumption will be reduced with up to 50 % compared to a cooling tower. It will be possible to use rain water as water for the hybride cooler.
The participants represents knowledge institutions, components suppliers and end-users which secure a strong project team and a good communication of the project results.
The project is divided into two parts, part 1 is development of a prototype of the hybride cooler and part 2 is measurements of the hybride cooler when it is mounted at the end-users to ducument its perfomance.
This report describes the work carried out in connection with the development of a hybrid cooler prototype with a performance up to 400 kW. The prototype consists of a radiator element, a fan, a spray system and a control. The prototype is installed at Danish Crown A/S in Ringsted, Denmark, where it has been in operation for six months.
The aim of the project is to develop a hybrid cooler that functions as a dry cooler during the winter and as a cooling tower during the summer in that the annual savings potential is 243 GWh of electricity when substituting the dry coolers with the hybrid cooler in Denmark.
The hybrid cooler will have an annual energy consumption that is 10% lower than the energy consumption of a dry cooler, and the water consumption can be reduced with up to 50% compared to a cooling tower. It is also possible to use rainwater as supplementary water for the hybrid cooler.
Different types of surface treatments have been tested and evaluated during the project. The surface treatments are going to prevent a blocking of the air intake side of the heat exchanger.
During the period of operation, a measurement programme has been carried out. These measurements form the basis for a comparison between the hybrid cooler and the dry coolers and the cooling towers, respectively.
Key figures
Category
Participants
| Partner | Subsidy | Auto financing |
|---|---|---|
| Teknologisk Institut | ||
| Vestas Aircoil | ||
| Novenco | ||
| ACCOAT A/S | ||
| DANISH CROWN A/S | ||
| IPU | ||
| CONDAIR A/S |
