Essays about: "Kylmedel"

Showing result 1 - 5 of 8 essays containing the word Kylmedel.

  1. 1. Field measurements evaluation and modeling of CO2 heat pump for residential building (Gamen 12)

    University essay from KTH/Energiteknik

    Author : Hassan El Sabea; [2019]
    Keywords : Koldioxidtrans-kritisk värmepump; Fältmätningar; Gamen 12 Skrapan ; Vasakronan; Bostadshus; Kostnadsbesparingar.;

    Abstract : Carbon dioxide, as a natural refrigerant, is safe and environment-friendly. It is also an economic refrigerant which can be utilized in residential heat pumps. Analysis has been done to evaluate the performance of the CO2 heat pump in Gamen 12 (Skrapan) in the Sodermalm area, owned by Vasakronan; which is a real estate company. READ MORE

  3. 2. Evaluation of CO2 Ice rink heat recovery system performance

    University essay from KTH/Energiteknik

    Author : Sotirios Thanasoulas; [2018]
    Keywords : Ice rinks; CO2 as refrigerant; Heat recovery; Efficient systems; Operation control; Warm climate; Isrinkar; Koldioxid som kylmedel; Värmeåtervinning; Effektiva system; Driftstyrning; Varmt klimat;

    Abstract : Ice rinks are the largest energy consumers in terms of public buildings due to their simultaneous need of cooling, heating, ventilation, and lighting for different parts of the building which means that these facilities also have a lot of potential for energy saving. Due to the size of the cooling unit in an ice rink the refrigerant charge can become quite high, which potentially has a big impact on the environment. READ MORE

  4. 3. CFD Simulation of MQL with low temperature and high-pressure coolant

    University essay from KTH/Industriell produktion

    Author : Venkata Raghurama Swaroop NADELLA; [2018]
    Keywords : Temperature; Pressure; Fluid flow; Heat transfer; Cutting fluid; Coolants; Velocity; Simulation; Temperatur; Tryck; Vätskeflöde; Värmeöverföring; Skärvätska; Kylmedel; Hastighet; Simulering;

    Abstract : Att använda stora mängder skärvätskor vid en bearbetningsprocess har potentiellt negativ inverkan inte bara för operatören men också på miljön. Utöver detta tillkommer ökade kostnader för tillverkningsprocessen. READ MORE

  5. 4. Grease-oil compatibility in tribological applications - supergrease

    University essay from Lunds universitet/Centrum för analys och syntes

    Author : Anna Von Krusenstierna; [2016]
    Keywords : tap-changer; lindingskopplare; fett; grease; transformer oil; grease-oil compatibility; materials chemistry; materialkemi; Technology and Engineering; Chemistry;

    Abstract : A common reason to malfunctioning of tap-changers is wear of tribological contacts. In order to reduce wear, it would be desirable to lubricate the contacts. Since the tap-changer is working in transformer oil, it is necessary that whatever lubricant is added is compatible with transformer oil. READ MORE

  6. 5. 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