När fler människor flyttar ut till sina fritidshus och bor där hela året om bildas så kallade omvandlingsområden där användningen av vatten och avlopp förändras. Detta leder ofta till högre vattenanvändning och kraven på avloppssystemen ökar därmed. Det finns tre huvudtyper av lösningar som vanligtvis används för att möta kravet på bättre avloppssystem i omvandlingsområden: enskilda lösningar på varje fastighet, en samfälld lösning eller en lösning i kommunal regi. Syftet med studien var att utvärdera kostnader för VA-system i omvandlingsområden i Sverige. Fem olika områden studerades med avseende på beräknade kostnader jämfört med det verkliga utfallet. Beräkningar gjordes på totala investeringskostnader, kostnad per fastighet såväl som kapitalkostnad och drift- och underhållskostnad. Jämförelser gjordes också med andra lösningar som var aktuella innan området byggde ut den valda VA-lösningen. Arbetet berörde även metodiken för hur kommuner väljer VA-system i omvandlingsområden. Det var billigare för en samfällighetsförening, 1 000 kr/m, att gräva ledningar än för en kommun, 4 400 - 5 900 kr/m. Grundare ledningsgravar var en av orsakerna till detta. En annan slutsats var att befintlig infrastruktur från tidigare VA-system kan göra samma typ av VA-system billigare om delar av det befintliga fortfarande är i gott skick. Driftkostnaden för enskilda system beror mycket på hur många personer som nyttjar systemet och under hur stor del av året. Vid samtal med kommuner framkom det att valet av VA-system i omvandlingsområden i regel inte föregås av en jämförelse mellan olika VA-system. Istället är det oftast en överföringsledning till ett befintligt kommunalt nät som väljs. / More and more people choose to live permanently in houses built as vacation houses, thereby creating transition areas. The increased occupancy in the houses tends to lead to larger water usage and often demands improved wastewater systems. There are three main ways in which this demand usually is met: each property builds an on-site system, the properties jointly build a facility through a community association, or the properties connect to the municipality’s network. The aim was to evaluate the costs of water and wastewater systems in transition areas in Sweden. This was done by studying five different improved transition areas and comparing the estimated costs with the actual cost of the systems. Both total investment costs and cost per property were calculated, as well as capital costs, and operation and maintenance costs. How the municipalities choose the sanitation system to be implemented was also a part of the study.  It was much more expensive for the municipality to build pipes than for a community association. One reason for this was shallower pipe placement. Another conclusion was that if part of a sanitation system already exists and is in good shape, this will lead to lower investment costs for a new system using that part. The operation costs for on-site systems on each property will be much higher for a family living there permanently, compared to that of a family living there only part time. Municipalities in Sweden generally do not compare different types of systems before deciding on an improved water and sanitation system in a transition area. Instead they almost always build a transmission line for water and wastewater to connect the area to an already existing centralized system.

This work topic is development and history of intelligent wiring systems in Czech Republic as well as abroad. The firs paragraphs describe following: intelligent wiring systems, the differences between classic and intelligent wiring systems and consequently is described the intelligent wiring system itself (types, principles, advantages, disadvantages etc.). Detailed description of system Inels follows in the next chapters. This system is supposed to be the fundamental matter of this work and is used in consequent suggestions for intelligent wiring system that is defined at the end of the theoretical part of this work. At the conclusion the economic evaluation of various wiring options and assessment by the multicriteria analysis (MCA) will be provided.

My doctoral thesis deals with use of the sophisticated methods for the selection of technical and economic solution of electrical wiring. This solution is based not only on a price but also on many other criteria such as a comfort, service, durability etc. The focus of the work is a treatise on wiring systems from a global perspective, where it is impossible to use a conventional approach for objective evaluation and selection of the appropriate electrical wiring system (because of the complexity of such systems and their interdependencies). In the four chapter are given information of an energy consumption (the total consumption and household consumption). In this chapter is given also a consumption prediction – especially for households. Following is an overview of possible measures for reducing electricity consumption in households. In the next part of this thesis are solved the knowledge, respectively expert systems for use in an electrical engineering – especially for a suitable tool for the selection and evaluation of households wiring electrical system. The result of this work provides a possible solution for a selection of wiring electrical system for households (focusing on the intelligent wiring) – from a technical and economic point of view and with using an innovative approach. The main contribution of this work is a proposal of the main part of the knowledge base. This base could be as a basis for knowledge, respectively for an evaluating technical and economical solution of an electrical wiring system – the expert system includes also a feedback function of an effectiveness solution, use value, price etc., which would also serve as a knowledge base.