Geothermal Heat Articles
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The Major Components of Heat Exchangers
Heat exchangers are not only one of the most common pieces of equipment found on industrial sites, they are also one of the most important. Despite the name, heat exchangers are used for both heating and cooling and are actually used more often for cooling, especially on industrial sites such as refineries or processing plants. These pieces of equipment are not “one size fits all.” In ...
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Zoo-technical application of Ground Source Heat Pumps: a pilot case study
Ground Source Heat Pumps are energy-efficient HVAC systems usually adopted in residential and commercial buildings. However the control of the thermal environment is required not only in spaces occupied by people, but also in intensive breeding farms, in order to maintain healthy conditions and to increase productivity. In the Italian livestock breedings, heating is usually provided by means of ...
By Tethys srl
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Case Study - Evaluating Geothermal Potential - Ravenna, Italy
University of Bologna researchers carried out an investigation of the thermal properties of the coastal aquifer at Ravenna Italy in order to evaluate its geothermal potential for residential heating. As part of that investigation, they measured the water temperature versus depth at 56 piezometers. EnviroInsite was then utilized to establish the relationship of water temperature with land use, ...
By EI LLC
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The Swedish Connection
IKEA Group is fully committed to renewable energy, waste reduction, and more. Stefan Sjöstrand, the company’s Canadian president, walks us through the instructions. IKEA is more than just a household name, it is a world leader in sustainable business practice, with a commitment to be energy independent in its operations worldwide by 2020. In Canada, it’s already reached that ...
By GLOBE Series
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Projected Costs of Generating Electricity - 2015 Edition
This joint report by the International Energy Agency (IEA) and the Nuclear Energy Agency (NEA) is the eighth in a series of studies on electricity generating costs. As policy makers work to ensure that the power supply is reliable, secure and affordable, while making it increasingly clean and sustainable in the context of the debate on climate change, it is becoming more crucial that they ...
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Case study - Managing complex energy systems
Introduction: Campus on a Renewable Mission The Chewonki Foundation owns and runs a school campus in Wiscasset, Maine that supports a high school program, a boys and girls summer camp, and an organic farm. Chewonki is an alternative school with a focus on environmental education and natural history. ch-classroom.jpgAs such, one of the Foundation’s goals is to teach its students about ...
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Advocates of Renewable Energy: Be Careful What We Promise
Sixty years ago, nuclear was hyped as a source of energy / electricity that would be “too cheap to meter.” The OPEC oil embargo dashed the western world's dream of bountiful low-cost energy but, when Brian Mulroney was elected a decade later, he terminated Canada's research into renewables because “the energy crisis was over.”That funding cut led to my appointment as head of the Solar Energy ...
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Renewable energy progress report
What is the Renewable energy progress report and what is its purpose? The Renewable Energy Directive states that a progress report should be issued every two years. The purpose of this progress report is to assess Member States' progress in the promotion and use of renewable energy in line with the 2020 targets. In addition, it contains sections on thesustainability scheme for biofuels and ...
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Kenics Heat Exchanger Increased Production Capacity in Specialty Chemical Plant
Increasing production capacity and setting a monthly production record are targeted goals for all manufacturers. To achieve this, all equipment and systems must work in perfect unison and perform to optimal efficiency. The Situation A large specialty chemical manufacturer located in Ohio was experiencing unsatisfactory production levels due to the plant’s old, outdated, inefficient ...
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Implementation of a transient exergy analysis for a plate–fin heat exchanger
A 2nd law thermodynamic analysis with exergy analysis can provide a more robust means of accounting for all of the energy flows within and in between subsystems and the work potential. These energy flows may be thermal, chemical, electrical, pneumatic, etc. Some systems such as air or ground vehicles have very transient modes of operation. Energy optimisation of these vehicles through modelling ...
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A Cleaner Energy Future
As renewable energy plays an increasingly important role in the world’s energy portfolio, the standards of ASTM International Committee E44 are helping to pave the way for innovation in clean energy sources. A growing population and improving living standards around the world are causing significant increases in energy demand and competition for fossil fuels. These escalating energy ...
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Proof: For superior energy efficiency - Water Beats VRF - Case Study
ASHRAE’s Apples to Apples Comparison Proves Hydronics Delivers Superior Energy Efficiency over VRF For years Variable Refrigerant Flow (VRF) manufacturers have been touting their systems’ superior energy efficiency over hydronics without providing the supporting data. Then ASHRAE decided to showcase both systems in its Atlanta headquarters and meter their performance. The results ...
By Evapco Inc.
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Infloor Heating Systems Powered by Geothermal Energy - Case Study
Alternative energy continues to gain attention, and for good reason. Did you know the ground beneath your feet contains enough energy to heat and cool your home, and your domestic hot water? Heat stored in the ground can be used as a fuel source harnessed through geothermal heat pumps. More and more people are catching on to this clean, renewable, readily available energy resource and their ...
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Exergetic and sustainability performance assessment of geothermal (ground source) ejector heat pumps
Although ejectors have been used in cooling/refrigeration and Heat Pumps (HP) applications for a long time, utilisation of Geothermal Ejector Heat Pump (GEHP) with Ground–Heat Exchanger (GHE) is a new idea, which has recently appeared in the literature. In this study, we model a GEHP system with a GHE in terms of exergetic aspects and apply our model to this system in the heating mode. The system ...
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Investigation of a hybrid solar and geothermal driven absorption cooling system for district applications
In this paper, a new hybrid geothermal and solar driven absorption cooling system (ACS) is proposed for low–temperature district energy applications. Two approaches are proposed in this study, namely: a) a new model for determining the specific entropy values of LiBr–water solution and (b) two new energetic and exergetic parameters, namely geothermal contribution index and solar contribution ...
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Heat as a by–product or sub–product of CO2 storage in mafic and ultramafic rocks
Since carbonates are at a lower energy state than free CO2, storage through carbonation of silicate rocks is thermodynamically favoured and proceeds spontaneously by releasing heat. In an in–situ CO2 injection site, the heat released in these exothermic reactions can be exploited in a geothermal power–plant, effectively contributing toward the economic viability of the storage process. Our ...
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Talking Point: Geothermal systems and the value of maintenance programmes
Mike Deed, Managing Director of Geoquip Water Solutions, is the author of Talking Point in the October issue of Groundwater Engineering. He focuses on the huge benefits of installing a geothermal system and the importance of building in a maintenance programme at the outset to achieve the maximum potential from that system. He goes on to outline some of the problems that could compromise a ...
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Investigation of some renewable energy and exergy parameters for two Geothermal District Heating Systems
In this study, three new exergy parameters, namely total exergy destruction ratio, component exergy destruction ratio and dimensionless exergy destruction are introduced in addition to energetic renewability ratio, exergetic renewability ratio, energetic reinjection ratio and exergetic reinjection ratio, and compared for Edremit and Bigadic Geothermal District Heating Systems (GDHSs) based on ...
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What energy efficiency type are you?
By Elisa Wood July 29, 2010 Not so long ago, consumers seemed to like energy efficiency just a little bit more than going to the dentist. Clearly that has changed, as evidenced by the recent run on appliance and home retrofit subsidies in several states. Greens are no longer alone in swooning over front loader washing machines and geothermal heat pumps. But who exactly are these new energy ...
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Permeable (pervious) pavements and geothermal heat pumps: addressing sustainable urban stormwater management and renewable energy
Water and energy are the two most fundamental ingredients of modern civilisation and are also the most precious and essential resources around the globe. They are inseparably coupled and with increasing pressures on these resources as the world's populations grow, the concepts of a combined approach can be applied while addressing the economic, climate, water and energy crises. Sustainable ...
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