scholarly journals Greenhouse gas emissions from domestic hot water: heat pumps compared to most commonly used systems

2016 ◽  
Vol 4 (2) ◽  
pp. 123-133 ◽  
Author(s):  
Bongghi Hong ◽  
Robert W. Howarth
Keyword(s):  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Heat Pumps ◽  
Hot Water ◽  
Gas Emissions ◽  
Domestic Hot Water

scholarly journals Economic and Environmental Assessment on Implementing Solar Renewable Energy Systems in Spanish Residential Homes

Energies ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 4183
Author(s):  
Alberto Cerezo-Narváez ◽  
María-José Bastante-Ceca ◽  
José-María Piñero-Vilela
Keyword(s):  
Energy Efficiency ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Environmental Assessment ◽  
Hot Water ◽  
Solar Thermal ◽  
Small Scale ◽  
Gas Emissions ◽  
Energy Behavior ◽  
The Impact

In Europe, buildings are responsible for more than one third of the total final energy demands and greenhouse gas emissions. In the last twenty years, the European Union has published a succession of energy performance of building directives to define and ensure the fulfilment of a series of objectives regarding greenhouse gas emissions, energy consumption, energy efficiency and energy generation from renewable sources in buildings. For its part, Spain is adapting its legal framework, transposing these directives with the aim of achieving greater energy efficiency and sustainability for buildings. Under this context, an energy, economic and environmental assessment is performed to analyze the impact of these regulatory changes on a single-family home including a photovoltaic installation for self-consumption with surpluses and/or a solar thermal installation for domestic hot water supply, located in each one of the eight thousand one hundred thirty-one municipalities that make up Spain. The energy behavior of the original house is compared with that obtained after it is updated with these new facilities. The transient system simulation tool is used for the energy study. The results show that the European objectives are far exceeded. The energy savings achieved range from 67% to 126%, carbon dioxide emissions decrease by 42% to 100% and energy bills are reduced in cost by 32% to 81%. The findings of this work can be used by policymakers as guidelines for the development of national strategic plans and financial incentives for the promotion of small-scale residential photovoltaic and solar thermal applications, as well as by designers, supervisors, managers and developers to include them in their projects.

scholarly journals Combining Building Renovation and Ground Source Heat Pump Installations for the Reduction of Greenhouse Gas Emissions: A Case Study in Vaasa Finland

2009 ◽  
Vol 4 (1) ◽  
pp. 146-168
Author(s):  
Joyce Cooper ◽  
Tarja Häkkinen ◽  
Sirje Vares ◽  
Jenni Jahn ◽  
Sakari Pulakka
Keyword(s):  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Heat Pump ◽  
Heat Pumps ◽  
Heat Sources ◽  
Ground Source Heat Pump ◽  
Ground Source Heat Pumps ◽  
Gas Emissions ◽  
Ground Source

Given the growing interest in ground source heat pump and distributed heating installations in general for the reduction of greenhouse gas emissions, technology implementation planning can benefit from the simultaneous consideration of building renovations. Here, a method for identifying and evaluating scenarios based on cost and greenhouse gas emissions is presented. The method is demonstrated for a case study in Vaasa Finland. The case study considers the insulation of the walls, roof, and base floor and the replacement of windows based on 2003 and 2010 Finnish building codes simultaneously with the possible replacement of existing heat sources with ground source heat pumps. Estimates of changes in heat demand for consecutive renovations are combined with data on renovation, installation, heating costs, and life cycle greenhouse gas emissions data for the current and proposed heat sources. Preferred scenarios are identified and evaluated by building type, construction decade, and current heating source. The results are then placed within the contexts of the Vaasa building stock and policy theory.

scholarly journals Combined Environmental and Economic Assessment of Energy Efficiency Measures in a Multi-Dwelling Building

Energies ◽  
2019 ◽  
Vol 12 (13) ◽  
pp. 2484 ◽  
Author(s):  
Ricardo Ramírez-Villegas ◽  
Ola Eriksson ◽  
Thomas Olofsson
Keyword(s):  
European Union ◽  
Life Cycle ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Energy Use ◽  
Heat Pumps ◽  
The European Union ◽  
Geothermal Heat ◽  
Gas Emissions ◽  
Energy Carriers

The aim of this study is to assess how different renovation scenarios affect the environmental and economic impacts of a multi-dwelling building in a Nordic climate, how these aspects are correlated and how different energy carriers affect different environmental impact categories. In order to reduce greenhouse gas emissions, the European Union has set an agenda in order to reduce energy use in buildings. New buildings on the European market have a low replacement rate, which makes building renovation an important factor for achieving the European Union goals. In this study, eight renovation strategies were analyzed following the European Committee for Standardization standards for life cycle assessment and life cycle costs of buildings. This study covers all life cycle steps from cradle to grave. The renovation scenarios include combinations of photovoltaics, geothermal heat pumps, heat recovery ventilation and improved building envelopes. Results show that, depending on the energy carrier, reductions in global warming potential can be achieved at the expense of an increased nuclear waste disposal. It also shows that for the investigated renovation strategies in Sweden there is no correlation between the economic and the environmental performance of the building. Changing energy carriers in Sweden in order to reduce greenhouse gas emissions can be a good alternative, but it makes the system more dependent on nuclear power.

scholarly journals Heat Pumps Can Lower Home Emissions, but Not Everywhere

Eos ◽  
2021 ◽  
Vol 102 ◽  
Author(s):  
Jackie Rocheleau
Keyword(s):  
Public Health ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Heat Pumps ◽  
Gas Emissions ◽  
Heating And Cooling ◽  
The Right

A new study shows that in the right places, heat pumps can help homeowners lower greenhouse gas emissions, save on heating and cooling costs, and promote public health.

scholarly journals Energy efficiency model for small/medium geothermal heat pump systems

2015 ◽  
Vol 10 (1) ◽  
pp. 12-33 ◽  
Author(s):  
Robert Staiger ◽  
Adrian Tanţău
Keyword(s):  
Energy Efficiency ◽  
Renewable Energy ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Renewable Energy Sources ◽  
Heat Pumps ◽  
Coefficient Of Performance ◽  
Scientific Article ◽  
Gas Emissions ◽  
Hp Model

Abstract Heating application efficiency is a crucial point for saving energy and reducing greenhouse gas emissions. Today, EU legal framework conditions clearly define how heating systems should perform, how buildings should be designed in an energy efficient manner and how renewable energy sources should be used. Using heat pumps (HP) as an alternative “Renewable Energy System” could be one solution for increasing efficiency, using less energy, reducing the energy dependency and reducing greenhouse gas emissions. This scientific article will take a closer look at the different efficiency dependencies of such geothermal HP (GHP) systems for domestic buildings (small/medium HP). Manufacturers of HP appliances must document the efficiency, so called COP (Coefficient of Performance) in the EU under certain standards. In technical datasheets of HP appliances, these COP parameters give a clear indication of the performance quality of a HP device. HP efficiency (COP) and the efficiency of a working HP system can vary significantly. For this reason, an annual efficiency statistic named “Seasonal Performance Factor” (SPF) has been defined to get an overall efficiency for comparing HP Systems. With this indicator, conclusions can be made from an installation, economy, environmental, performance and a risk point of view. A technical and economic HP model shows the dependence of energy efficiency problems in HP systems. To reduce the complexity of the HP model, only the important factors for efficiency dependencies are used. Dynamic and static situations with HP´s and their efficiency are considered. With the latest data from field tests of HP Systems and the practical experience over the last 10 years, this information will be compared with one of the latest simulation programs with the help of two practical geothermal HP system calculations. With the result of the gathered empirical data, it allows for a better estimate of the HP system efficiency, their economic costs and benefits and their environmental impact.

Low-Carbon Russia: Prospects after the Crisis

2009 ◽  
pp. 107-120 ◽  
Author(s):  
I. Bashmakov
Keyword(s):  
Economic Growth ◽  
Potential Energy ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Low Carbon ◽  
Modeling Tools ◽  
Gas Emissions ◽  
Scenario Approach

On the eve of the worldwide negotiations of a new climate agreement in December 2009 in Copenhagen it is important to clearly understand what Russia can do to mitigate energy-related greenhouse gas emissions in the medium (until 2020) and in the long term (until 2050). The paper investigates this issue using modeling tools and scenario approach. It concludes that transition to the "Low-Carbon Russia" scenarios must be accomplished in 2020—2030 or sooner, not only to mitigate emissions, but to block potential energy shortages and its costliness which can hinder economic growth.

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