scholarly journals Time-Dependent Integration of Solar Thermal Technology in Industrial Processes

2020 ◽  
Vol 12 (6) ◽  
pp. 2322 ◽  
Author(s):  
Calvin Kong Leng Sing ◽  
Jeng Shiun Lim ◽  
Timothy Gordon Walmsley ◽  
Peng Yen Liew ◽  
Masafumi Goto ◽  
...  
Keyword(s):  
Waste Heat ◽  
Meteorological Data ◽  
Hot Water ◽  
Solar Thermal ◽  
Critical Parameters ◽  
Physical Constraints ◽  
Levelized Cost ◽  
Thermal Integration ◽  
Levelized Cost Of Heat

Solar energy is currently an underutilized renewable energy source that could fulfill low-temperature industrial heat demands with significant potential in high solar irradiance counties such as Malaysia. This study proposes a new systematic method for optimization of solar heat integration for different process options to minimize the levelized cost of heat by combining different methods from the literature. A case study from the literature is presented to demonstrate the proposed method combined with meteorological data in Malaysia. The method estimates capital cost and levelized cost of solar heating considering important physical constraints (e.g., available space) and recovery of waste heat. The method determines and optimizes important physical dimensions, including collector area, storage size, and control design. As the result of the case study, the solar thermal integration with Clean-In-Place streams (hot water) gives the lowest levelized cost of heat with RM 0.63/kWh (0.13 EUR/kWh) due to its lowest process temperature requirement. The sensitivity analysis indicates that collector price and collector efficiency are the critical parameters of solar thermal integration.

scholarly journals Potential for waste heat utilization of hot‐water‐cooled data centers: A case study

2020 ◽  
Vol 8 (5) ◽  
pp. 1793-1810
Author(s):  
Johannes Oltmanns ◽  
David Sauerwein ◽  
Frank Dammel ◽  
Peter Stephan ◽  
Christoph Kuhn
Keyword(s):  
Data Centers ◽  
Waste Heat ◽  
Hot Water ◽  
Heat Utilization ◽  
Waste Heat Utilization

scholarly journals Financial Analysis of Solar Water Heating Systems during the Depression: Case Study of Greece

2012 ◽  
Vol 23 (1) ◽  
pp. 33-40 ◽  
Author(s):  
Jacob G. Fantidis ◽  
Dimitrios V. Bandekas ◽  
Constantinos Potolias ◽  
Nick Vordos ◽  
Kostas Karakoulidis
Keyword(s):  
Financial Analysis ◽  
Meteorological Data ◽  
Water System ◽  
Hot Water ◽  
Solar Thermal ◽  
Water Heating ◽  
Water Heater ◽  
Solar Water ◽  
Green House ◽  
The Government

The use of solar thermal collectors is an economic alternative for water heating. In Greece more than 4 million m2 of collector area has been installed; however, the financial and economic crisis has dealt the solar thermal market a heavy blow. The aim of the paper is twofold: firstly, to present the new legislations and combined efforts taken by the government in order to give the solar thermal market a boost; secondly, to evaluate the effect of these efforts and calculate the new financial data from the citizens. For the promotion of solar water heaters, new legislations and concerted efforts are taken by the government. The effect of the new incentive program on the payback time of a typical glazed solar hot water system in Greece was investigated in this work. Long-term meteorological data from 47 stations are analyzed in order to evaluate the potential of solar water heater application at each site in Greece. The RETScreen software was used to predict the financial viability and the green house gas emissions reductions. The economical indicators showed that Tymbakion was the best site and Ioannina the worst. From the environmental point of view, it was found that on an average an approximate quantity of 1.47 ton of green house gases can be avoided entering into the local atmosphere each year.DOI: http://dx.doi.org/10.5755/j01.ee.23.1.1222

scholarly journals Estimation of the Radiative Sky Cooling Potential through Meteorological Data: A Case Study in Tropical Climate

2021 ◽  
Vol 312 ◽  
pp. 02008
Author(s):  
Irvin Merchant ◽  
Miguel Chen Austin ◽  
Dafni Mora
Keyword(s):  
Mathematical Model ◽  
Solar Radiation ◽  
Meteorological Data ◽  
Tropical Climate ◽  
Critical Parameters ◽  
Cooling Systems ◽  
The Hours ◽  
Sensibility Analysis ◽  
Simplified Mathematical Model

In search of thermal comfort, over the years, various techniques have been developed to adapt to the conditions of the enclosures, depending on the region and the activity carried out. Thus, this project seeks to evaluate the radiative sky cooling potential for various areas of Panama. This evaluation will be carried out by developing a simplified mathematical model based on meteorological data. An uncertainty-sensibility analysis of the model was also carried out to highlight the critical parameters. Radiative sky cooling systems have been shown to be susceptible to cloudiness and humidity. With a tropical climate, Panama is critical to consider these two variables when developing the simplified mathematical model. Another aspect to consider when estimating the cooling potential will be the hours of the day when there is no solar radiation.

Waste Heat Recovery from Central AC System for Hot Water Supply; A Case Study for Hotel Building Application in Indonesia

2017 ◽  
Vol 23 (12) ◽  
pp. 12206-12210 ◽  
Author(s):  
I. Nyoman Suamir ◽  
I. Nengah Ardita ◽  
I. Gusti Agung Bagus Wirajati
Keyword(s):  
Water Supply ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Hot Water ◽  
Hot Water Supply

scholarly journals Local Heating Networks with Waste Heat Utilization: Low or Medium Temperature Supply?

Energies ◽  
2020 ◽  
Vol 13 (4) ◽  
pp. 954 ◽  
Author(s):  
Hanne Kauko ◽  
Daniel Rohde ◽  
Armin Hafner
Keyword(s):  
Low Temperature ◽  
Heat Pump ◽  
Urban Areas ◽  
Waste Heat ◽  
Local Heating ◽  
District Heating ◽  
Heat Pumps ◽  
Hot Water ◽  
Local Network ◽  
Medium Temperature

District heating enables an economical use of energy sources that would otherwise be wasted to cover the heating demands of buildings in urban areas. For efficient utilization of local waste heat and renewable heat sources, low distribution temperatures are of crucial importance. This study evaluates a local heating network being planned for a new building area in Trondheim, Norway, with waste heat available from a nearby ice skating rink. Two alternative supply temperature levels have been evaluated with dynamic simulations: low temperature (40 °C), with direct utilization of waste heat and decentralized domestic hot water (DHW) production using heat pumps; and medium temperature (70 °C), applying a centralized heat pump to lift the temperature of the waste heat. The local network will be connected to the primary district heating network to cover the remaining heat demand. The simulation results show that with a medium temperature supply, the peak power demand is up to three times higher than with a low temperature supply. This results from the fact that the centralized heat pump lifts the temperature for the entire network, including space and DHW heating demands. With a low temperature supply, heat pumps are applied only for DHW production, which enables a low and even electricity demand. On the other hand, with a low temperature supply, the district heating demand is high in the wintertime, in particular if the waste heat temperature is low. The choice of a suitable supply temperature level for a local heating network is hence strongly dependent on the temperature of the available waste heat, but also on the costs and emissions related to the production of district heating and electricity in the different seasons.

scholarly journals Rain Erosion Maps for Wind Turbines Based on Geographical Locations: A Case Study in Ireland and Britain

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
K. Pugh ◽  
M. M. Stack
Keyword(s):  
Wind Turbine ◽  
Western Europe ◽  
Meteorological Data ◽  
Turbine Blades ◽  
Weather Conditions ◽  
Annual Rainfall ◽  
Wind Turbine Blades ◽  
Weather Patterns ◽  
The Uk

AbstractErosion rates of wind turbine blades are not constant, and they depend on many external factors including meteorological differences relating to global weather patterns. In order to track the degradation of the turbine blades, it is important to analyse the distribution and change in weather conditions across the country. This case study addresses rainfall in Western Europe using the UK and Ireland data to create a relationship between the erosion rate of wind turbine blades and rainfall for both countries. In order to match the appropriate erosion data to the meteorological data, 2 months of the annual rainfall were chosen, and the differences were analysed. The month of highest rain, January and month of least rain, May were selected for the study. The two variables were then combined with other data including hailstorm events and locations of wind turbine farms to create a general overview of erosion with relation to wind turbine blades.

scholarly journals RELaTED Project: New Developments on Ultra-Low Temperature District Heating Networks

Proceedings ◽  
2020 ◽  
Vol 65 (1) ◽  
pp. 25
Author(s):  
Antonio Garrido Marijuan ◽  
Roberto Garay ◽  
Mikel Lumbreras ◽  
Víctor Sánchez ◽  
Olga Macias ◽  
...  
Keyword(s):  
Low Temperature ◽  
High Performance ◽  
Waste Heat ◽  
District Heating ◽  
Hot Water ◽  
Thermal Systems ◽  
Heating Source ◽  
Wide Range ◽  
Thermal Sources ◽  
Heating Networks

District heating networks deliver around 13% of the heating energy in the EU, being considered as a key element of the progressive decarbonization of Europe. The H2020 REnewable Low TEmperature District project (RELaTED) seeks to contribute to the energy decarbonization of these infrastructures through the development and demonstration of the following concepts: reduction in network temperature down to 50 °C, integration of renewable energies and waste heat sources with a novel substation concept, and improvement on building-integrated solar thermal systems. The coupling of renewable thermal sources with ultra-low temperature district heating (DH) allows for a bidirectional energy flow, using the DH as both thermal storage in periods of production surplus and a back-up heating source during consumption peaks. The ultra-low temperature enables the integration of a wide range of energy sources such as waste heat from industry. Furthermore, RELaTED also develops concepts concerning district heating-connected reversible heat pump systems that allow to reach adequate thermal levels for domestic hot water as well as the use of the network for district cooling with high performance. These developments will be demonstrated in four locations: Estonia, Serbia, Denmark, and Spain.

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