En undersökning om två alternativa ventilationsaggregat med kyla på en befintlig byggnad : FTX värmepump med roterande värmeväxlare eller Sorptiv kyla

Sammanfattning: This thesis is based on comparing two different air-ventilation systems with cooling in a building. Two systems are compared, the first one is FTX with heat pump and a rotating heat exchanger, and the second is a system with sorptive cooling. These systems use different types of energy – electricity and district heating for both cooling and heating. The FTX system (FTX 480) is produced from IV product and the system with sorptive cooling (DCI 3.0) is given from the company Munters. An FTX system recycles heat using a heat exchanger. Sorptive cooling is a technique that lowers the temperature by using district heating which cools the warm air coming from outside. The purpose is to study how effective these systems are looking at the costs of the systems and how they impact the climate. This is done by a life cycle cost analysis and a environmental implant analysis. This thesis is guided and has been given documentation by Statens fastighetsverk. The building that is mentioned in this study is Afrikahuset that is located in Uppsala. Product sheets for the systems have been produced and given by the companies IV product and Munters. Results show that system FTX 480 gives a lower cost and a lower climate effect compared to DCI 3.0 (sorptive cooling). Therefore, FTX 480 has the lowest total cost during the systems lifecycle, provides the lowest energy use on an annual basis and provides the best financial outcome over a 30-year time. In conclusion, a FTX system with heat pump and rotating heat pump is more useful than a system with sorptive cooling.