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Found 4 essays matching the above criteria.

  1. 1. Optimizing Energy System in a Supermarket : A case study analysis

    University essay from KTH/Skolan för industriell teknik och management (ITM)

    Author : Filip Josefsson; [2022]
    Keywords : R744; heat recovery; refrigeration system; supermarket; optimization; water-cooled condenser gas cooler; R744; värmeåtervinning; kylsystem; livsmedelsbutik; optimering; vattenkyld kondensor gaskylare;

    Abstract : With more restrictions regarding the use of refrigerants with high GWP-values, refrigeration systems that uses R744 (Carbon dioxide) as a refrigerant increases. Supermarkets are energy intense facilities where the refrigeration system utilize a significant part of the total utilized energy. READ MORE

  3. 2. Natural Refrigerants in Data Center Cooling with Thermosiphon Application

    University essay from KTH/Energiteknik

    Author : VICTOR HEINERUD; ANDRÉ SAHLSTEN; [2016]
    Keywords : ;

    Abstract : Ever since the computer was invented, there has been a need of data storage and the demand has strictly grown since. This has resulted in a huge amount of data centers and the trend has shown no signs of changing. The data centers are powered by electricity and in 2010 the electricity consumption for data centers stood for 1. READ MORE

  4. 3. Experimental Investigation of heat recovery from R744 based refrigeration system

    University essay from KTH/Tillämpad termodynamik och kylteknik

    Author : Zahid Anwar; [2011]
    Keywords : ;

    Abstract : .... READ MORE

  5. 4. Open Issues in Control ofAutomotive R744 Air-ConditioningSystems

    University essay from Elektroteknik

    Author : Sanaz Karim; [2007]
    Keywords : R744; Air-Conditioning; COP; Cooling power; optimization; two-stage orifice valve; Two-evaporator;

    Abstract : In this thesis, one of the current control algorithms for the R744 cycle, which tries tooptimize the performance of the system by two SISO control loops, is compared to acost-effective system with just one actuator. The operation of a key component of thissystem, a two stage orifice expansion valve is examined in a range of typical climateconditions. READ MORE