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 34 for “"domestic hot water"”.
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High resolution time-series modeling of domestic hot water heating systems
This thesis evaluates domestic water heating systems in conjunction with energy saving technologies such as solar water heating, drain water heat recovery, and heat pump water heating. Five dynamic models are developed using Matlab Simulink® with a time-step of one minute. Using minute resolution …
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Experimental investigation of nighttime losses from ICS solar domestic hot water systems
The nighttime losses from an integral collector storage (ICS) system were investigated. The significance of the sky temperature, wind speed, and ambient temperature on the losses were examined. Outdoor data was taken on several nights to characterize the thermal performance of an ICS system under …
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Investigation of standard test procedures for integral storage solar domestic hot water systems
… commercial integral storage collectors for solar domestic hot water systems. These tests were performed under a variety of ambient conditions and irradiance levels, both with and without forced circulation and noontime hot water draws. An analytical model was developed to predict the thermal …
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Legionella pneumophila in Domestic Hot Water Systems: Evaluation of Detection Methods and Environmental Factors Affecting Survival
… transmitted through inhalation or aspiration of water containing the bacterium and can be acquired within the home. Studies have found that 0-37% of domestic water heaters contain Legionella, making household hot water systems a potential route of exposure. The objective of this research was to …
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Thermal Performance Comparison of Three Integrated Thermal Solar Roof Collectors
… season, part of the space heating and preheating domestic hot water demand can be met by this integrated system. In the cooling season, cooling load reduction and preheating domestic hot water can be achieved by operating this system. The traditional solar thermal system is an add-on system rather …
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Estimating residential hot water consumption from smart electricity meter data
Despite the fact that residential water heating is among the most energy-intensive aspects of the water sector, domestic hot water use is often poorly quantified. However, water-related energy savings in the residential sector are possible from the implementation of energy-efficient water heaters. …
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Energy use in multi-family dwellings : measurements and methods of analysis
… 105 kWh/m² annually including space heating, domestic hot water heating, common electricity and household electricity. Different building techniques and technical systems were used at the different properties. A measurement program including hourly measurements of district heating, common …
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Solar Colletors Combined with Ground-Source Heat Pumps in Dwellings - Analyses of System Performance
… heat pumps for heating buildings and domestic hot water in dwellings is increasing rapidly in Sweden. The heat pump extracts heat from the ground by a U-pipe in a vertical borehole. In order to reduce the electricity demand in the system, the combination with solar collectors is …
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Analysis, assessment and optimization of integrated solar energy systems for multigeneration
… energy input. Electrical power generation, fresh water, space heating and cooling and domestic hot water are the major commodities that furnish our life activities. Hydrogen is another useful product taken into consideration. The proposed systems in this work cover all these products as a step for …
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Preliminary Investigation into Solar Thermal Combi-system Performance
… to provide thermal energy for space heating and domestic hot water. These systems come in many different designs and configurations, and their performance is dependent on many different factors such as location, solar collector type and orientation, and thermal storage size. In this study, two …
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Analysis and assessment of integrated waste-to-energy systems based on plastic wastes for multigeneration
… useful outputs of electric power, heating, fresh water, domestic hot water, and hydrogen. The proposed locations for the three systems are Cordoba, Spain for the first multigeneration system, Kakkonda, Japan for the second multigeneration system and Tarfaya, Morocco for the third system. The …
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An integrated wind-powered energy system for residential applications in cold regions
… energy system that can provide drinking water, domestic hot water, space heating as well as electricity for residential applications of a remote community in a cold region. The novelty of the system is that it uses a wind turbine to directly power the heat pump, with the sea water as the …
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Analysis and design of a cylindrical parabolic solar collector
… appears better suited for process heating than domestic hot water or space heating. Glass and plastic covers were analyzed and the optimum collector slope was obtained. The investigation resulted in a better understanding of how different collector dimensions and materials affect collector …
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Smart Solutions to Manage Peak Electricity Demand in Saudi Arabia
… is not compromised. Thirdly, the use of solar water heating (SWH) systems for the supply of domestic hot water is proposed. A study on the reduction in peak electricity demand achievable when domestic hot water is supplied using SWH systems is presented. KSA has high potential for developing …
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Proposed Design for a Coupled Ground-Source Heat Pump/Energy Recovery Ventilator System to Reduce Building Energy Demand
… present a novel approach to space condition and domestic hot water supply for a residence. The proposed system is capable of providing hot water on-demand with a high coefficient of performance (COP), thus eliminating the need for a hot water storage tank and circulation system while requiring …
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Solar water heating system in libyan buildings
… can be utilized as a form of heat, such as solar water heating, and as electricity, such as solar photovoltaic. Solar water heating systems are commonly referred to in the industry as Solar Domestic Hot Water systems. The challenges (increasing demand for energy, sustainable development, low …
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Load Frequency Control for Electric Water Heater Using DBSCAN Algorithm in real-time
… a novel control strategy for residential water heaters to provide demand-side frequency regulation while maintaining customer comfort. The approach employs Density-Based Spatial Clustering of Applications with Noise (DBSCAN) algorithm to dynamically group water heaters based on their …
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Towards Net Positive and Nearly Zero Carbon Residential Neighborhoods
… as highly energy-efficient appliances, heating, domestic hot water (DHW), and lighting systems within each residential unit. The main contribution of the presented study entails developing a holistic and scalable methodology for the design and analysis of high-performance residential units and …
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