The latest thing in the area of environmental building today is energy-plus-house. The idea behind the energy-plus-house is to create a house that produces more energy than it consumes. To accomplish this, the house uses renewable energy, in this particular case solar energy. With the help from a proper construction and thoughtfully projected installations you can achieve a surplus of energy. The surplus energy can then be sold to the surrounding buildings and thereby conduce to a financial profit for the household. We have focused on the project “Kv. Trettondagen” which has been designed by JM Entreprenad AB on the order of Stockholmshem AB. Together with JM Entreprenad AB we have compiled this study which focuses on calculations of the installations. We have implemented a study where we compare the energy performance of “Kv. Trettondagen” with the growing energy requirements of today.There is a requirement that ”Kv. Trettondagen” should reach the technical standard of a passive house. Calculations by hand does not give a result that matches those requirements but calculations using data-driven energy calculation programs shows a result that meets the requirements of a passive house.”Kv. Trettondagen” will produce a energy surplus of 4000 kWh per year and that surplus is a pure profit for the owner Stockholmshem AB. The surplus that’s produced comes from solar panels and is a surplus of heat energy.Results in this report shows that “Kv. Trettondagen” meets the requirements for being a labeled as a Svanen building. It also shows that “Kv. Trettondagen” reaches a high rating in the environmental certification of Miljöklassad byggnad. From our point of view “Kv. Trettondagen” will accomplish a good result when being certified by LEED and BREEAM.

Calculated and measured energy in residential buildings is going to differ. The reason to this may be due to many factors. In this study there is a study on how these factors affect the energy use in a building. To get an insight in what defines energy, there is first a description of energy supply both worldwide and used in Sweden, followed by a description of the energy balance. In this study energy will be studied in residential buildings only. Laws are applied to the energy use in buildings and how they should be handled. There are laws regarding a maximum use of energy in buildings in different climate zones. In this study some of the factors that affect the energy use are listed and described. It takes into account both structural engineering, installation, technical and user behavioral factors. Out of these one interesting factor, which usually isn’t calculated for, will be chosen and further looked in to.The project will be carried out with different calculations on heat losses from heat water circulations in a residential building with nine floors all together, including a cellar, and 23 apartments. It will be calculated for how much energy is used with these heath losses. The first calculation is done on a standard thermal insulation with the standard gauge appropriate for each pipe size. To execute the calculation AMA 98 will be applied. In the followed study there will be a calculation on how much energy is saved if the thermal insulation is thicker. Another study will be calculated for if there is a different type of insulation used, and in this case vacuum insulation, which has a much better thermal insulation than the standard one. Due to the fact that the thermal insulation is better, there will be a study in what happens with the energy use when a different insulation thickness is used. A comparison is made with the heath losses from the hot water in the same circuit

There is a lot going on in the construction business right now. It feels like everywhere you turn there is a building sight. Furthermore the business is heading a generation change and the need of recruiting new construction engineers is huge. How is the business going to handle the transition that they are facing? The question has been in progress for at while and I wanted to find out what the current students feel about taking the step into the working life and replace the veterans.A research is made about student’s opinion about their education and future work life. The study is performed on upper class students on selected schools and managers that have been working for maximum three years. Interviews are also performed on education officers and Peab.Some of the most obvious observations are concerning the states of courses and lecturers and also wishes for more contact between companies and both students and schools.

QC 20110616

QC 20110616

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This report is focusing upon relining from a client’s point of view. Potential buyers are given a presentation of the different methods available today together with a general briefing describing the process. An important part of this report are the interviews that took place with already established customers. Property owners, managers, pipe cleaners, and project managers whom all been in contact with relining have answered the questions given along with their own thoughts and have also given recommendations of other persons to talk to. Information has also been given the report through literature studies, fieldtrips, and meetings with some relining companies. The results presented in this report shows the relining industry to have satisfied customers, companies being very service minded, and that relining is a method worth considering if you´re in the need of taking care of old pipes. Relining your pipes is shown to be a very good environmental choice even though choosing a method containing epoxy with Bisphenol A. As a conclusion this report describes how relining can benefit to great savings, is an environmental good choice, and many times a quick and easy alternative to a traditional change of pipes. Overall there are three cases where relining is a good choice. 1. If there is an acute leakage on the pipes that can’t be solved quickly in any other way. 2. If the apartment already has a recently renovated bathroom and the floor drain and sealing layer is in good shape. 3. In places where it would be very expensive or almost impossible to change pipes or if the building contains businesses vulnerable to disturbance.

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