Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 21 for “"Central heating"”.
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The fundamentals of two-phase flow in wet domestic central heating systems
… deaerators on the flow line of domestic wet central heating systems. To date, no data and theoretical models predicting the two-phase flow characteristics in domestic wet central heating systems are available in the open literature. This gap in literature has prevented essential design …
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The cost of heating buildings from a central heating station by direct low-pressure steam
Open Restriction set for Item 115329 on 2020-07-02T16:22:20Z with date null by lac7@illinois.edu.
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An economic study of a proposed 2000-KW turbo-generator unit in the Virginia Polytechnic Institute central heating and power plant
… function of the Virginia Polytechnic Institute Central Heating and Power Plant is to provide steam for heating the various building: on the campus. The plant also furnishes the campus and the community of Blacksburg with a portion of their power requirements, the campus with hot water, and the …
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A study of the production costs of the services of an isolated central heating and power plant at the Virginia Polytechnic Institute
… as listed: 1. Electric energy 2. High pressure heating 3. Low Pressure heating 4. Hot soft water 5. Cold soft water. Before the first of October 1930 there were no daily records kept of the various steam, electrical and water services. Weekly or monthly readings were made on several ot the …
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An economic study of a proposed high-pressure boiler and turbo-generator unit in the central heating and power plant of the Virginia Polytechnic Institute
Through this thesis evidence will be collected to determine the need of a proposed turbo-generator and boiler unit adequate for future requirements of the campus and community of Blacksburg.
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The determination of the optimum operating conditions of an eight year old, E. Keeler, 500 horsepower, three drum, bent water tube steam generating unit in the Virginia Polytechnic Institute Central Heating and Power Plant
… was added to the Virginia Polytechnic Institute Central Heating and Power Plant. This unit was an E. Keeler, 500 horsepower, three drum, bent water tube type boiler, fired by a Westinghouse five retort underfeed stoker with link-grate section. Soon after the installation of this unit, W.F. …
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Lietuvos šilumos tiekimo įmonių veiklos efektyvumo analizė ir vertinimas /
… aims to examine the efficiency of Lithuanian central heating supply companies. The thesis consists of 3 main parts: analysis of the methods of assessing the efficiency of the company's performance studied in the scientific literature, justification of the methodology chosen for the study, and …
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Energy use in buildings and design requirements. The energy costs and financial costs of building materials, structures and space heating, the detailed patterns of use of heating systems in dwellings, and their interactions: their implications for design.
… a number of periods from 1970 to early 1980 for heating by gas and night rate electricity. The effect of price changes-on the economic attractiveness of insulation is investigated and the likely effects of future price rises are considered. It is concluded that, in certain circumstances, higher …
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Gamybinių patalpų šildymo kieto kuro katilu projektavimas /
… the study is to modernize – the 75 kW solid fuel central heating boilers feeding system. In the first part of the bachelor thesis there are calculations of the 75 kW bioleres feeding systems main parameters, the efficiency coefficient and the production volume is shown. The second part describes …
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Essays on Households' Technology Choices and Long-Term Energy Use
… of three essays on households' choice of heating technology at the moment of building a new detached house. The analyses make use of Finnish administrative registry data to study how sensitive these investments are to electricity prices and how socio-demographic characteristics of …
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An economic justification of using a small turbine rather than pressure reducing valves between the high pressure header and high pressure heating lines of V.P.I. Power Plant
… a demand for process steam and also demand for heating, most of the auxiliaries of the plant should be arranged to be driven by steam rather than using electrical energy for them. This is, however, a general remark and a correct selection can be made only after a detailed study is made of all …
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Design and thermal modeling of a residential building
… benefits of retrofitting the residential heating system from single-zone to multi-zone temperature control. The objective of this thesis is to design a physical model to simulate the thermal profile of a residential building with a conventional single-zone central heating system. A scale …
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ΠΑΡΑΚΟΛΟΥΘΗΣΗ ΤΗΣ ΑΤΜΟΣΦΑΙΡΙΚΗΣ ΡΥΠΑΝΣΗΣ ΤΗΣ ΕΥΡΥΤΕΡΗΣ ΠΕΡΙΟΧΗΣ ΑΘΗΝΩΝ ΑΠΟ ΠΟΛΥΚΥΚΛΙΚΟΥΣ ΑΡΩΜΑΤΙΚΟΥΣ ΥΔΡΟΓΟΝΑΝΘΡΑΚΕΣ
… (I) THE PAH CONCENTRATIONS WERE HIGHER IN THE CENTRAL AREA OF ATHENS CITY THAN IN THE INDUSTRIAL AREA (II) THE PAH CONCENTRATIONS IN THE ATMOSPHERE ARE LOWER IN SUMMER. THE HIGHERVALUES OF PAH WERE MEASURED DURING SUNDAYS. (IV) THE PAH CONCENTRATIONS WERE HIGHER DURING THE MORNING HOURS 9-11. …
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Analysis of Energy Savings and Feasibility of Retrofitting New York City Midrise Multifamily Buildings with Air Source Heat Pump Technology
… buildings to replace fossil fuel space and water heating systems with electric powered alternatives. In many cities, especially in the northeast, fossil fuel space and water heating systems are used in a vast majority of buildings and significantly contribute to citywide carbon emissions. In New …
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Domestic gas consumption, household behaviour patterns, and window opening
Domestic gas consumption for central heating is a function both of the efficiency of the heating system and the way in which it is used. While many studies have concentrated on the performance of systems and their controls, there have been few studies of occupant behaviour. The thesis therefore …
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Energy Use Caps under Scrutiny: An Ecological Economics Perspective
… cost in household maintenance expenditures, heating_source) had a role to play in characterizing energy use. Based on energy costs paid for different energy sources, groups of the Hungarian population were created: using primarily 1. Other fuel (mainly solid fuels), 2. (Piped) gas, 3. Central …
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Pan climatic humans : shaping thermal habits in an unconditioned society
… communal space, and by having occupants rely on central heating/cooling systems that often require harmful concentrated energy sources, such as fossil fuels. This thesis asks if and how we can design spaces of everyday life that not only satisfy a basic thermal need but also encourage occupant …
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The effect of domestic mechanical heat recovery ventilation on asthma control of patients allergic to the house dust mite
… in parallel with a warm indoor microclimate. Central heating, fitted carpets and tight building construction have improved standards of heating and energy efficiency in homes, at the expense of ventilation. A warm, humid environment favours the growth of the house dust mite population. Allergy …
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An economic study of turbo-generator units to meet the future demands of the Virginia Polytechnic Institute heating and power plant
… was conducted to determine the indicated average heating season saving which could be expected from several different size turbines with different throttle conditions and varying stages of feedwater heating when operating in the Virginia Polytechnic Institute Central Heating and Power Plant. Such …
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