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Heat re-use datacenter greenhouse ICE research

Fluid simulations for an air recirculated datacenter greenhouse

07 October 2021, 13:16

Philip Rudén has been at RISE ICE Datacenter doing his master thesis project on fluid dynamic simulations for green houses connected to datacenters.

The main objective of the project was to see if it possible to use waste heat from a data center to heat a greenhouse, but also to see if it possible to recirculate the air from the greenhouse back in to the data center. The prospected greenhouse has a surface area of 300m2 and is planned to be built during the spring of 2021 and heated by a 665kW data center.

Humid air in both greenhouses and data center is a critical parameter. Where it can causes diseases for the plants and it can damage the equipment in the datacenter.

The simulation tools Ansys and IDA-ICE where used in order to calculate parameters such as the heat demand, mass flow, temperatures and velocity’s. First a model where build in IDA-ICE, due to that the mass flow calculated there is used as a boundary condition in the Ansys simulation. To complement this, hand calculations have been made on the RH-level in both the greenhouse and the datacenter.

The results from the calculations and simulations showed that it is possible to build an air recirculated system, from the greenhouse back to the data center. The heat demand and the mass flow that are requierd for the greenhouse is lower than what the data center can provide.

However, there might be some concerns for the RH-level in the data center. This due to that if the air from the greenhouse is directly mixed with the outside air, the RH in the data center will be higher than wanted. Therefore, there is necessary to take the right measures to prevent this and lower the RH. One solution is to dehumidify the air stream from the greenhouse before it enters the data center.

Link to the thesis https://lnkd.in/dTNi7d2C

Mattias Vesterlund

Mattias Vesterlund

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