Två olika värmesystem i två flerbostadshus har analyserats. Målet med analysen är att få en uppfattning om vilket värmesystem som är mest fördelaktigt i flerbostadshus. I analysen jämförs två olika värmesystem. I värmesystemen används två olika sorters frånluftsvärmepumpar för att återvinna värme ur frånluften. När värmepumparna inte klarar av att producera tillräckligt med värme för att täcka fastighetens värmebehov används fjärrvärme som spetsning. Värmepumparna är fastighetens huvudvärmekälla. I den ena fastigheten, Gäddan 1, används en luft-vatten frånluftvärmepump. Kylbatteriet som finns i frånluftsvärmepumpen är placerat i frånluftkammaren. Den andra fastigheten, Gäddan 2, använder sig av två utomhusvärmepumpar. Dessa två är placerade i en frånluftskammare för att kunna återvinna den varma luften.  Under analysen har en sammanställning av egna mätningar och prognoser tagits fram ur en mätningsperiod på tre veckor. I analysen jämförs de olika värmesystemen utifrån tre olika faktorer; energi, miljö och ekonomi. De parametrar som beräknats är värmefaktor (COP), energiförbrukning (kWh), livscykelkostnad (LCC), återbetalningstid (år) och kostnad för producerad värmeenergi (kr/kWh). Resultaten utgår från statistiken och jämförs mellan varandra. Resultatet av analysen visar att värmesystemet i fastigheten Gäddan 1 är mest fördelaktig enligt de metoder som har använts som berör både energi och ekonomi.  Det resultat som visats är att Gäddan 1 har 20 % högre värmefaktor, 12 % lägre driftskostnad och 50 % snabbare återbetalningstid för värmesystemet. Dock har värmesystemet 36 % högre koldioxidsutsläpp under systemets levnadslängd, som är baserat på 20 år.  I slutsatsen kan fastigheternas storlek påverka resultaten. Gäddan 1 är en större byggnad och har fler lägenheter jämfört med Gäddan 2. Detta påverkar förbrukningen av fjärrvärme i värmesystemen som ökar koldioxidsutsläppen, vilket kan vara en bidragande faktor till att Gäddan 1 har högre koldioxidsutsläpps resultat (36 %) än Gäddan 2. / Two different heating systems in two apartment buildings have been analyzed. The goal of this analysis is to get an idea of which heating system is most beneficial in apartment buildings. The analysis compares two different heating systems. Two different kinds of exhaust air heat pumps are used to recover heat from exhaust air. When heat pumps are unable to produce enough heat to cover the heating demand of the buildings, district heating is used. The heat pumps are the property's main source of heat. In one property, Gäddan 1, an air-water heat pump is used. The cooling coil located in the exhaust air heat pump is placed in the exhaust chamber. The other property, Gäddan 2, features two outdoor heat pumps. These two pumps are disposed in an exhaust chamber in order to recover the hot air. During analysis, a compilation of measurements and predictions from a measurement period of three weeks has been analyzed in order to calculate the various parameters. The analysis compares the different heating systems based on three different factors including energy, environment and economy. The parameters that are calculated are the coefficient of performance (COP), energy consumption (kWh), life cycle cost (LCC), payback period (years) and cost of the produced thermal energy (SEK / kWh). The results are based on statistics and compared between each other. The result of the analysis shows that the heating system in the property Gäddan 1 is the most beneficial, according to the methods used concerning both energy and economy. The result shows that Gäddan 1 has a 20 % higher coefficient of performance, 12 % lower operating cost and 50 % faster payback time for the heating system. However, this heating system has 36 % higher carbon dioxide emissions during its life span, which is based on 20 years. In conclusion the properties size may also affect the results. Gäddan 1 is a larger building and has more flats than Gäddan 2. This affects the consumption of district heating in the heating systems with increase carbon emissions. This may be a contributing factor to a higher carbon dioxide emission in Gäddan 1 (36 %) compare to Gäddan 2.

The project examines the possibilities to develop a local and sustainable model for food production in Uppsala with focus on diet, farming methods and different types of greenhouse installations. With the simulation software VIP energy 3.1.1 the energy balance and temperature development of greenhouses of different materials were calculated for different operating cases. The results were also compared when the greenhouse was installed stand-alone or integrated to the wall of a small standard or passive house. With a starch based diet and biological farming methods research suggests it is possible to produce food efficiently without compromising the environment or our health. The yearly food needs for a family of four that follows the suggested diet was estimated to 4362 kg and the outdoor land required to produce it was calculated to 4676 m2 through organic yield statistics. The area could however be reduced to 2813 m2 if the only starch staple in production was potatoes. The tender growing season in a greenhouse constructed with a covering of 5 mm glass or 5-16Ar-5 mm was calculated to 85 and 148 days respectively. The energy use required for year round production of mushrooms in the respective greenhouses was calculated to 53 or 16 kWh/m2,year. Half hardy plants required 399 or 173 kWh/m2,year and tender plants 953 or 358 kWh/m2,year. When the greenhouses were connected to the wall of a small house the heating demand could be reduced by up to 22 % depending on the operating case.

The thesis is engaged in complete reconstruction of a heat system of a family house with higher heat loss, i.e. heat source, piping and radiators. As a heat source is chosen air-water heat pump. Heat system is designed with panel radiators with regard to minimum building interventions. A required power for hot water heating is calculated and selected a heat pump from suitable power range in combination with storage tank with hot water tank. The bivalent point is determined, as backup source are heating elements installed in storage tank. Drawings and circuit diagrams with safety elements are attached. In the end is calculation of estimated return.

The main aim of this master project is to design a new nursery school with a parking lot and playground in Jinačovice. The building has single floor and flat green roof. It is divided into three main parts: middle part, class A, class B. The middle part includes a wind lobby, corridor and auxiliary rooms such as cleaning room, staff rooms, storage and utility room. Almost identical classes A and B include a day room/play room, changing room, children washroom, storage of toys and kitchen. The vertical loadbearing masonry is made of Porotherm ceramic blocks. The envelope walls insulated with ETICS. The horizontal loadbearing structure is made of Spiroll panels. Heating energy is supplied by two air-water heat pump. Ventilation is provided by air conditioning with heat recovery. Shading is provided by external louvers. The project was carried out in AutoCAD.