evaporative condenser Articles
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Anaerobic digestion of stillage fractions – estimation of the potential for energy recovery in bioethanol plants
Stillage processing can require more than one third of the thermal energy demand of a dry-grind bioethanol production plant. Therefore, for every stillage fraction occurring in stillage processing the potential of energy recovery by anaerobic digestion (AD) was estimated. In the case of whole stillage up to 128% of the thermal energy demand in the process can be provided, so even an ...
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Exergetic analysis of the vapour compression refrigeration cycle using ejector as an expander
A computer simulation of the ejector-compression cycle is carried out using a one-dimensional ejector model. In order to identify the amounts and locations of irreversibility within the components of the cycle, exergy analysis is employed. The effects of evaporating temperature and condensing temperature on the COP, second law efficiency and exergy destruction are investigated. It is concluded ...
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Exergy analysis of a Vapour Compression Refrigeration system with R-22, R-407C and R-410A
The parametric investigations of actual Vapour Compression Refrigeration (VCR) cycle in terms of Coefficient of Performance (COP), Exergy Destruction (ED) and exergetic efficiency of refrigerants R-22, R-407C and R-410A have been predicted with the help of a developed computational model. The present investigation has been carried out for evaporator and condenser temperatures in the range of ...
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Anaerobic treatability and biogas production potential of selected in-mill streams
Biochemical methane potential assays (BMP assays) were performed to study the potential of anaerobic treatment of in-mill wastewaters. The assay results indicated that condensate and the BCTMP effluent, which are currently treated with the anaerobic internal circulation reactors, were the best streams for anaerobic treatment because of their relatively high degradability (>80%) and initial rates ...
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Thermodynamic modelling of a water-to-water heat pump using propane as refrigerant
The aim of this paper is to develop a thermodynamic model for a water-to-water heat pump using propane as refrigerant. This model is based on the thermodynamic principals and heat transfer fundamental laws. The performances of the heat pump have been looked at as function of the water temperatures at the entry of the evaporator and the condenser. The results show that the cooling and heating COP ...
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Water and vapor movement with condensation and evaporation in a sandy column
The diffusion of warm, humid air into an initially cold, dry, sandy column was analyzed to study the movement of water vapor and liquid water under nonisothermal and low water content conditions. The analysis was performed using the HYDRUS-1D code. While the water retention curve of sand was measured experimentally, the unsaturated hydraulic conductivity function was inversely estimated from the ...
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Exergoeconomic analysis of industrial brine chilling unit using aqua-ammonia vapour absorption refrigeration system
Exergoeconomic analysis of an industrial brine chilling unit using a large capacity aqua ammonia Vapour Absorption Refrigeration (VAR) system is carried out. The analysis is based on Tsatsaronis's Thermoeconomic Evaluation and Optimisation (TEO) Method which is one of the many methods that was developed since the pioneering work of Tribus and Evans. The economic cost of all the flows and product ...
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Thermodynamic and thermoeconomic analysis of subcooled and superheated vapour compressed refrigeration system using R152A, R410A and R600A
In this study, thermodynamic and thermoeconomic analysis procedures are applied to a subcooled and superheated vapour compression refrigeration system for different refrigerants. By thermodynamic analysis, Coefficient of Performance (COP), irreversibilities and exergetic efficiencies of a theoretical refrigeration system are determined to evaluate the system performance. With the thermoeconomic ...
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A Heated Discussion on Lead-Acid Batteries
Having just endured one of the hottest Julys on record, many people have been subjected to extremely hot environments lately. And, in some cases, where their bodies have produced or absorbed more heat than they could dissipate, people have been experiencing an abnormally high body temperature due to the failure of their body to thermoregulate. This is called hyperthermia. In fact, as I wrote ...
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The thermal energy storage is the key for decarbonization
Summary Thermal energy storage plays a key role in the energy transition process. It makes possible to overcome the intermittence’s obstacle inherent to traditional renewable power generation sources (such as wind or solar), or the mismatch between available energy production and consumer’s demand, solved nowadays by inefficient management of resources, with paid plants on standby ...
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Second law based performance analysis of seawater source cascade heat pump system: a case study
This paper presents the second law based analysis of a seawater source cascade heat pump system operating with two different refrigerants. The present cascade heat pump system consists of two different heat pumps attached in such a way that the condenser of the first stage heat pump is the evaporator for the second heat pump and the condenser of the second heat pump is attached to the place to be ...
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Modelling and exergoeconomic optimisation of a gas turbine with absorption chiller using evolutionary algorithm
In this paper, thermodynamic modelling of a gas turbine cycle with absorption chiller is performed. A thermoeconomic approach is utilised to find the most optimal values of design parameters for practical applications. Some design parameters considered are compressor pressure ratio, compressor isentropic efficiency, gas turbine isentropic efficiency, gas turbine inlet temperature, HRSG pressure, ...
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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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Exergy analysis of DSG parabolic trough collectors for the optimal integration with a combined cycle
A comprehensive energy and exergy analysis was conducted for various components of a direct steam generation (DSG) parabolic trough solar collector field under nominal operating conditions to assess performance of the components and to optimally integrate them with a thermal system. The solar field was modelled mathematically to compute thermal loss and consequently the thermodynamic ...
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Self–organisation of regular dusty structures in plasma trap
The formation of ordered dusty structures in the special RF–gas discharge (plasma trap) capable of capturing and confining nano– and micro–particles in electromagnetic field was studied experimentally. Two ways of the dust–plasma structure formation were investigated: (1) The condensation of preliminary evaporated organic or inorganic substances. The plasma trap could confine the vapour clusters ...
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Solar Industrial Process Heating - Industrial Process Heating with Solar Power - The Artic Solar Solution
Thermal energy and steam are required for industrial processes. From the extraction of raw materials; Gas, mining, food and beverage processing, sanitation, commercial laundries and distillation heat is a vital part of the processing and manufacturing sectors. In the last several years, interest in using solar thermal collectors to generate the heat needed for industrial processes and ...
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The Different Parts of a Continuous Pyrolysis Plant
Continuous pyrolysis plants can be a new technology that may be getting used to transform biomass into biofuels. This kind of plant has a number of parts that really work together to generate a sustainable and efficient alternative energy source. In this particular post, you'll discover the various parts of a continuous pyrolysis plant and the way they function. How Can a Continuous Pyrolysis ...
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Top 3 Ways to Reduce HVAC Energy Consumption!
Everybody wants to reduce or minimize the energy cost of operating their heating ventilating and air conditioning (HVAC) systems. This includes Commercial Building Owners, Facility Managers and Homeowners. HVAC system energy costs typically represent 40% of total commercial building operating cost and 48% of total residential building operating cost. You can see that HVAC system energy ...
By Vac Systems
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Energy efficiency: la Compagnie des Fromages counts on innovation with Emerson technologies
The subsidiary of the Bongrain Group is pursuing a policy to reduce its energy usage and CO2 emissions by investing in a facility designed by Cofely Axima, a leader in industrial refrigeration and a subsidiary of GDF Suez. This solution stands out for its use of a process that heats and cools within a single cycle and its use of key components supplied by the Emerson Group – a Vilter ...
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