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669 Uppsatser om Heat pump - Sida 24 av 45

Smärta hos bröstcancerpatienter efter mastektomi : behandling och omvårdnadsåtgärderen litteraturstudie

Smärta är ett fenomen som inte bara påverkar patienter fysiskt utan även psykiskt. Kvinnor som genomgått mastektomi upplever att smärta påverkar deras livskvalité. Humörsvängningar, dålig sömn, depression, ångest och rörelsehinder är vanligt förekommande symtom som följd på postoperativ smärta. Syftet: Syftet med denna studie var att belysa vad sjuksköterskan kan ge för olika behandlingar och omvårdnadsåtgärder vid smärta efter mastektomi. Metod: Studien genomfördes som en litteraturstudie där författarna granskade sexton vetenskapliga studier.

Sänkt returtemperatur : Potentiell besparing i fjärrvärmesystem

Optimizing energy systems is, in Sweden, as in many other countries, of growing interest. District heating systems are no exception. In 2012, 285 out of 290 municipals in Sweden had district heating in use and the majority of these systems have a higher return temperature than that which is possible with an error-free substation of day current technology. To, when possible, lower the return temperature is a way of increasing the effectiveness of the district heating system.This study means to investigate, through simulations and calculations, how big of a reduction in production cost a lower temperature in the city of Ystad?s district heating system would correspond to.

Integrering av kommunikation i ingenjörsutbildningar : Ett underlag för kompetensutveckling för universitetslärare vid KTH

The sun is an endless energy source and the heat it produces can be used to heatup our homes. This technology is relatively old and was introduced in the late70-s. There are two kinds of solar collectors that are most frequently used todayand these are plain solar collectors and vacuum solar collectors. The plain solarcollectors are the once that are used the most but the vacuum solar collectorshave increased more as a percentage the last couple of years.The biggest question asked regarding an investment in solar heating is if theplant is economically profitable. This question has no direct answer because itis dependent on a couple of prerequisites.

Vinterträdgårdar ur ett byggperspektiv : En undersökning om byggandet av vinterträdgårdar

The purpose of this of this essay is to explore the construction of a conservatory that is livable allyear around. When you build a conservatory there are several factors that need to be regardedthat usually are of no importance when you build a regular conservatory. The glassed facadeneeds to have a very good U-value and all the parts of the facade need to be isolated and theconstruction needs to prevent thermal bridges.In this essay we will start by looking at the shape of the conservatory. Due to the façade consistsof glass the conservatory will need to have a good ratio between the area and the façade so thatthe heat losses will be at a minimum. However, due to the fact that one of the sides of the façadeis connected to the warm house, you quickly realize that the shape of the conservatory is of noimportance.There are two common ways to build a foundation for a conservatory, a molded concretefoundation and isolated wooden beams.

Test platform for pump controller - Platform development

I detta exjobb har en testplattform skapats för att kunna testa, utvärdera och jämföra olika pumpstyrningar i torr miljö. Testplattformen består av en simulerad pumpstation till vilken befintliga pumpstyrningar av valfri modell kan kopplas, det vill säga ett Hardware-In-the-Loop-system. De främsta fördelarna med en sådan plattform är flexibilitet, snabb feedback samt möjligheten att återskapa exakt samma förutsättningar för olika pumpstyrningar.Testplattformen har implementerats i LabVIEW på en PC som kommunicerar med pumpstyrningshårdvara via ett I/O-kort för analoga och digitala signaler.Det simulerade systemet konfigureras genom val av bland annat pumpar, pumpsump, inflöde och rörsystem. Utifrån de inmatade värdena och styrsignaler från pumpstyrningen simuleras sedan bland annat systemets flöden, energier och temperaturer. Nivån i sumpen, och övriga insignaler till pumpstyrningen, återkopplas från simuleringen.

Optimering av glidlager och utveckling av dess konstruktion

I detta projekt har vi fördjupat oss i en glidlagerkonstruktion som befinner sig i en skruvpress. Skruvpressen kompakterar en okänd massa som är sekretessbelagd. Robustus har ett förslag på överdimensionering av det nuvarande glidlagret. Målet med projektet var att analysera och optimera några glidlager i förhållande till det befintliga glidlagret samt att ta hänsyn till materialval och den miljö som lagret kommer att befinner sig i. Det som analyserna och optimeringen visade var att det befintliga glidlagret hade den bästa geometrin bland alla lösningar men inte det optimala materialet.

Vidareutveckling av skrotfallsprognos : på Sapa Heat Transfer AB

Sapa Heat Transfer AB (SHT AB) är en av tre delar inom koncernen Sapa Group, som ägs av det norska företaget Orkla ASA. SHT AB har produktion både i Sverige (Finspång) och i Kina (Shanghai). Företaget är en världsledande leverantör och utvecklare av aluminiumband som används i olika typer av värmeväxlare, främst inom bilindustrin.I flera steg av produktionen, som innefattar omsmältning, varm- och kallvalsning samt skärning, uppkommer ett skrotfall av aluminium. Detta skrot tas omhand och återanvänds som råvara i företagets omsmältverk. SHT AB har idag inget automatiserat IT-stöd för att prognostisera skrotavfallet, dessa beräkningar görs istället med hjälp av Excel.

En r?rspis: och hur den ?r uppbyggd

This thesis researches the construction of the Swedish masonry heater called r?rspis. A r?rspis has an inner smoke channel system that stores heat and it was developed in the early 19th century alongside the Swedish kakelugn (tiled stove). Unlike the tiled stove, the R?rspis was commonly found in simpler environments and is part of the cultural her itage of the rural population.

Effekter av tidiga reflektioner vid musikreproduktion

In this project the focus has been on the system for recombination at Oskarshamn 2. The recombining systems have on several occasions switched paths due to low pressure before the last ejector that?s feeding the recombiner. Of the mentioned reason, events and several measuring points have been analyzed in this report since the installation of the recombining systems.In order to prove theories and demonstrate what may be the cause of this problem, we used heat balance calculations by the program Probera. Using the program, we can demonstrate that the catalytic process does not reach the desired temperature with the amount of combustible substance.

Träbroar för järnvägstrafik

This report is a study in voltagelevel in connection with regeneration of brake energy from the tramtype M31 in Gothenburg.In the act of braking, the tram M31 uses electrical braking where the electrical motors generates energy and if possible send it back to the overheadline, where other trams in the nearby can use this regenerated energy for its own driving force. In cases where no other energyconsumers are located in the same section, there is a resistance witch task is to convert this energy into heat. The regulation of this resistance appears to cause an increase in the voltagelevel into far too high levels.Investigations of the trams regulationequipment and its construction have been done. Further have measurements on the overheadline been performed in order to map the voltagevariations during a longer period of time.The result have been showing that the voltagelevel during regeneration often is as high as 880V-920V, more extreme values have not been observed in a large scale. The values are especially high compared to the nominal voltagelevel.

Lactobacillus reuteri som probiotisk terapi mot bakteriell vaginit hos avelsråttor :

Lactobacillus reuteri has been used as probiotics in piglet and chicken feedings as well as in different diary products for humans. In this EEF-work I have shown that L. reuteri can be an alternative for treatment of vaginitis in laboratory rats used for breeding. In a breeding stock with 3000 animals some animals had a vaginal infection with ??haemolytic streptococci group G.

DATORSTÖD FÖR ARBETE : KONSEKVENSER FÖR VAL AV AFFÄRSSYSTEM En studie av en service- och supportavdelning

This report is focusing on problems with introducing standard enterprise resource planning systems (ERP) in businesses. A study has been carried out on a service and support department at a Swedish heat metering company, SVM North Node. The study aims to help the company become a better customer in choice and customization of a new ERP system. We make a description of the department studied and the work carried out there, on the basis of learning, knowledge and cooperation. As a final point we present some ideas on how computer systems could support their work, hoping that this will result in them making adequate demands on a new ERP system..

Den ekonomiska lönsamheten för solvärme i Sverige

The sun is an endless energy source and the heat it produces can be used to heatup our homes. This technology is relatively old and was introduced in the late70-s. There are two kinds of solar collectors that are most frequently used todayand these are plain solar collectors and vacuum solar collectors. The plain solarcollectors are the once that are used the most but the vacuum solar collectorshave increased more as a percentage the last couple of years.The biggest question asked regarding an investment in solar heating is if theplant is economically profitable. This question has no direct answer because itis dependent on a couple of prerequisites.

Energioptimering av Hemsö fästning med förslag på energieffektivare systemlösningar

The report is a master thesis about energy efficient measures for an underground facility Hemsö fortress.Several proposals are evaluated economically.Statistics of the electricity used and measurements of several Heat pumps are analyzed to find energysavings potentials.The results indicate that several units of a dehumidification system are responsible for over 70 % of theyearly electricity cost. The air that is being dehumidified by these units can otherwise cause damage ofculturally important interior designs.The proposal with highest profit suggests an alternative method for dehumidification. The cooler in theair handling units in Hemsö fortress have capacity to dehumidify the air. However complementary fansneed to be installed to circulate humid air towards the air handling units. The solution can be implementedin three different locations within the facility.

Kvalitetssäkring för Scaniasmotorkomponenter : Jämförelse med andra företag

Quality assurance for Scania engine componentsScania engines have become one of the world?s most renowned corporations in themanufacturing of engines. This is mostly due to the quality and performance thatScania have shown. However, this does not stop Scania from trying to achieve moresuccess in the fields of development and research to assure the quality of theirengines.The purpose of this thesis is to show how Scania ensures the quality of the enginecomponents, both those who made externally and internally at Scania, also inclusivethe manufacturing and assembly process.Three engine components were examined: D16 block engines, water pump andXP-Iinjectors. The study included the whole process from the step of supplying therow materials to the last step in production functional test.In this thesis an investigation of how other companies are working with qualityassurance was conducted.

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