The Experts below are selected from a list of 31617 Experts worldwide ranked by ideXlab platform

Michael R Collins - One of the best experts on this subject based on the ideXlab platform.

  • development and performance of a dual tank solar assisted heat pump system
    Applied Energy, 2015
    Co-Authors: Carsen J Banister, Michael R Collins
    Abstract:

    A novel dual tank solar-assisted heat pump (SAHP) system configuration for domestic Hot Water Heating was developed. Due to the multiple modes of operation arising from the configuration, it was necessary to develop a custom control strategy to minimize electricity consumption. The controller evaluates which modes of operation are possible given the current conditions and selects the best mode from those available.

  • development and performance of a dual tank solar assisted heat pump system
    Applied Energy, 2015
    Co-Authors: Carsen J Banister, Michael R Collins
    Abstract:

    Abstract A novel dual tank solar-assisted heat pump (SAHP) system configuration for domestic Hot Water Heating was developed. Due to the multiple modes of operation arising from the configuration, it was necessary to develop a custom control strategy to minimize electricity consumption. The controller evaluates which modes of operation are possible given the current conditions and selects the best mode from those available. The system modes of operation were validated experimentally using a test apparatus built at the University of Waterloo. Annual simulations of system performance for a single-family residential home indicate that the dual tank SAHP system developed provides significant energy savings in comparison to a traditional solar domestic Hot Water system. Using a benchmark comparison of a standard electric domestic Hot Water system and a solar domestic Hot Water system, the dual tank SAHP increased energy savings from 60% to 69% for 7.5 m 2 solar collector area. Applying the system to a larger load offers the potential for significant energy and cost savings, which would improve economic justifiability.

Philip C Eames - One of the best experts on this subject based on the ideXlab platform.

  • feasibility study of mgso4 zeolite based composite thermochemical energy stores charged by vacuum flat plate solar thermal collectors for seasonal thermal energy storage
    Renewable Energy, 2020
    Co-Authors: Daniel Maho, Paul Henshall, G Claudio, Philip C Eames
    Abstract:

    Abstract A primary drawback of solar thermal technologies, especially in a domestic setting, is that collection of thermal energy occurs when solar irradiance is abundant and there is generally little requirement for Heating. Thermochemical Energy Storage (TCES) offers a means of storing thermal energy interseasonally with little heat loss. A combination of a Solar Thermal Collector (STC) and TCES system will allow a variety of different Heating applications, such as domestic space and Hot Water Heating as well as low temperature industrial process heat applications to be met in a low carbon way. This paper describes and assesses the feasibility of two novel technologies currently under development at Loughborough University; i) an evacuated flat plate STC and ii) composite TCES materials, coupled together into a system designed to store and supply thermal energy on demand throughout the year. Experimental results of composite TCES materials along with predicted performance of STC's are used within a developed model to assess key metrics of conceptual TCES + STC systems feasibility, including; charging time, payback time, cost/kWh, energy savings and CO2 savings. This paper demonstrates the economic, energy and carbon savings potential of conceptual TCES + STC systems suitable for domestic use.

  • compact latent heat storage decarbonisation potential for domestic Hot Water and space Heating applications in the uk
    Applied Thermal Engineering, 2018
    Co-Authors: Jose Pinto Pereira M P Da Cunha, Philip C Eames
    Abstract:

    Abstract A performance comparison is presented for a domestic space and Hot Water Heating system with a conventional gas boiler and an air source heat pump (ASHP) with latent heat storage, both with solar thermal collectors for a typical UK climate, to demonstrate the potential of phase change material based energy storage in active Heating applications. The latent heat thermal storage system consisted of 10 modules with RT54HC comprising a total storage capacity of 14.75 kWh that provided 53% extra thermal storage capacity over the temperature range of 40–65 °C compared to a Water only store. The simulations predicted a potential yearly CO2 reduction of 56%, and a yearly energy reduction of 76% when operating the heat pumps using the economy 10 electricity tariff i.e. a low tariff between 00.00 and 05.00 and 13.00–16.00 with current grid emission values compared to the conventional gas boiler system; successfully offsetting the electrical load to meet the required heat demand. Due to the high capital costs of the heat pump system with latent heat storage, its levelized cost of energy was 117.84£/MWh, compared to 69.66£/MWh for the gas boiler, on a 20-year life cycle.

Carsen J Banister - One of the best experts on this subject based on the ideXlab platform.

  • development and performance of a dual tank solar assisted heat pump system
    Applied Energy, 2015
    Co-Authors: Carsen J Banister, Michael R Collins
    Abstract:

    A novel dual tank solar-assisted heat pump (SAHP) system configuration for domestic Hot Water Heating was developed. Due to the multiple modes of operation arising from the configuration, it was necessary to develop a custom control strategy to minimize electricity consumption. The controller evaluates which modes of operation are possible given the current conditions and selects the best mode from those available.

  • development and performance of a dual tank solar assisted heat pump system
    Applied Energy, 2015
    Co-Authors: Carsen J Banister, Michael R Collins
    Abstract:

    Abstract A novel dual tank solar-assisted heat pump (SAHP) system configuration for domestic Hot Water Heating was developed. Due to the multiple modes of operation arising from the configuration, it was necessary to develop a custom control strategy to minimize electricity consumption. The controller evaluates which modes of operation are possible given the current conditions and selects the best mode from those available. The system modes of operation were validated experimentally using a test apparatus built at the University of Waterloo. Annual simulations of system performance for a single-family residential home indicate that the dual tank SAHP system developed provides significant energy savings in comparison to a traditional solar domestic Hot Water system. Using a benchmark comparison of a standard electric domestic Hot Water system and a solar domestic Hot Water system, the dual tank SAHP increased energy savings from 60% to 69% for 7.5 m 2 solar collector area. Applying the system to a larger load offers the potential for significant energy and cost savings, which would improve economic justifiability.

Ian Beausoleilmorrison - One of the best experts on this subject based on the ideXlab platform.

  • design and simulated performance of a solar thermal system employing seasonal storage for providing the majority of space Heating and domestic Hot Water Heating needs to a single family house in a cold climate
    Solar Energy, 2019
    Co-Authors: Ian Beausoleilmorrison, Briana Paige Kemery, Adam Wills, Curtis Meister
    Abstract:

    Abstract The majority of the space and domestic Hot Water Heating needs of houses in cold climates can be supplied by solar energy, but only if long-term (seasonal) storage is employed to enable solar energy collected during the summer and autumn to be used during winter. Most seasonal storage applications to date have been for community-scale systems, although there have been a few experimental and simulation studies of building-scale applications, which offer reduced losses from transmission networks due to the proximity between building-mounted solar collectors and the seasonal store. A simulation-based study has been performed to design a building-scale solar thermal system with seasonal storage for a research house with a heated floor area of approximately 150 m2. Parametric simulations revealed that a solar fraction exceeding 90% could be achieved for many combinations of solar collector area and seasonal store volume. A solar collector gross area of 41.6 m2 and a seasonal store volume of 36 m3 were chosen for this installation, which is expected to achieve a solar fraction in the range of 87–98%.

  • an investigation of the technoeconomic feasibility of solar domestic Hot Water Heating for the canadian housing stock
    Solar Energy, 2014
    Co-Authors: Sara Nikoofard, Ismet V Ugursal, Ian Beausoleilmorrison
    Abstract:

    Abstract This study evaluates the impact on energy consumption and GHG emissions as well as the technoeconomic feasibility of retrofitting solar domestic Hot Water (DHW) Heating systems to all houses in the Canadian housing stock (CHS). The study was conducted using the Canadian Hybrid Residential End-Use Energy and GHG Emissions Model (CHREM). It was assumed that all houses that have a DHW system with a tank, and a roof facing south, south–west or south–east could be retrofitted with a solar DHW system. As to be expected, the energy and GHG emissions impact of retrofitting SDHW systems into the CHS is substantial. If all eligible existing DHW systems (30% of those existing in the CHS) were to be retrofitted with SDHW systems, the energy consumption and GHG emissions of the Canadian residential sector would be reduced by about 2%. This is equivalent to 22.7 PJ of end-use energy savings and 1 Mt of GHG emissions reduction, or 11.8% and 11.9%, respectively, of the current amounts associated with domestic Hot Water Heating. The energy savings potential with SDHW systems in all provinces are similar, while the GHG emission reductions vary significantly due to the substantially different fuel mix used in different provinces. The economic feasibility results demonstrate the impact of installation and fuel costs, as well as interest and energy price escalation rates on payback period.

Ismet V Ugursal - One of the best experts on this subject based on the ideXlab platform.

  • an investigation of the technoeconomic feasibility of solar domestic Hot Water Heating for the canadian housing stock
    Solar Energy, 2014
    Co-Authors: Sara Nikoofard, Ismet V Ugursal, Ian Beausoleilmorrison
    Abstract:

    Abstract This study evaluates the impact on energy consumption and GHG emissions as well as the technoeconomic feasibility of retrofitting solar domestic Hot Water (DHW) Heating systems to all houses in the Canadian housing stock (CHS). The study was conducted using the Canadian Hybrid Residential End-Use Energy and GHG Emissions Model (CHREM). It was assumed that all houses that have a DHW system with a tank, and a roof facing south, south–west or south–east could be retrofitted with a solar DHW system. As to be expected, the energy and GHG emissions impact of retrofitting SDHW systems into the CHS is substantial. If all eligible existing DHW systems (30% of those existing in the CHS) were to be retrofitted with SDHW systems, the energy consumption and GHG emissions of the Canadian residential sector would be reduced by about 2%. This is equivalent to 22.7 PJ of end-use energy savings and 1 Mt of GHG emissions reduction, or 11.8% and 11.9%, respectively, of the current amounts associated with domestic Hot Water Heating. The energy savings potential with SDHW systems in all provinces are similar, while the GHG emission reductions vary significantly due to the substantially different fuel mix used in different provinces. The economic feasibility results demonstrate the impact of installation and fuel costs, as well as interest and energy price escalation rates on payback period.

  • modeling of the space and domestic Hot Water Heating energy consumption in the residential sector using neural networks
    Applied Energy, 2004
    Co-Authors: Merih Aydinalp, Ismet V Ugursal, Alan S Fung
    Abstract:

    Two methods have been used to model residential end-use energy consumption at the national or regional level: the engineering method and the conditional demand-analysis method. It was recently shown that the neural network (NN) method is capable of accurately modeling the behaviours of the appliances, lighting, and space-cooling energy consumption in the residential sector. As a continuation of the work on the use of the NN method for modeling residential end-use energy-consumption, two NN based energy-consumption models were developed to estimate the space and domestic Hot-Water Heating energy consumptions in the Canadian residential sector. This paper presents the NN methodology used in developing the models, the accuracy of the predictions, and some sample results.

  • impact of appliance efficiency and fuel substitution on residential end use energy consumption in canada
    Energy and Buildings, 1996
    Co-Authors: Ismet V Ugursal, Alan S Fung
    Abstract:

    Abstract In this paper, the effect of appliance efficiency and fuel substitution on residential end-use energy consumption in Canada is studied based on simulation studies conducted on the Expanded STAR database, which consists of detailed descriptions of 937 houses from different regions of Canada, using an hour-by-hour building energy simulation program. The findings of this study clearly indicate that improving appliance efficiency reduces the overall end-use energy consumption in the residential sector. However, the magnitude of savings as a result of improving only appliance efficiencies is quite small. For example, by replacing appliances in 10% of residences by highly efficient appliances (reflecting the technology of the next decade), the savings in end-use energy consumption would be about 1%. Significantly larger savings, in the order of 5–10%, can be obtained by improving house envelopes and Heating/cooling systems in addition to improving appliance efficiencies (also assuming a 10% market penetration of energy efficiency improvement measures). Fuel substitution for space and domestic Hot Water Heating can also have a significant potential for reducing residential energy consumption depending on the fuel substitution scenario adopted.