scholarly journals Analysis on the Effect of the Crown Heating System and Warm Nutrient Supply on Energy Usage in Greenhouse, Strawberry Growth and Production

2021 ◽  
Vol 30 (4) ◽  
pp. 271-277
Author(s):  
Taeseok Lee ◽  
Jingu Kim ◽  
Seokho Park ◽  
Jaehan Lee ◽  
Jongpil Moon
Keyword(s):  
Heating System ◽  
Nutrient Supply ◽  
Energy Usage

scholarly journals Climate Regulation of Rearing-Related Buildings - Evaluating the Factors Related to the Energy Requirement of Heating/Cooling, and Analysis of Alternative Solutions

2017 ◽  
Vol 5 (1) ◽  
pp. 73-83
Author(s):  
Laszló Toth ◽  
Balint Horvath ◽  
Zsolt Fulop ◽  
Csaba Fogarassy
Keyword(s):  
Energy Requirement ◽  
Heating System ◽  
Temperature Limit ◽  
Energy Usage ◽  
Climate Regulation ◽  
Technical Requirements ◽  
Huge Impact ◽  
Climate Parameter ◽  
Oil Gas ◽  
Alternative Solutions

Abstract The most notable role in the energy usage of rearing-related buildings belongs to barn climate. For animals, one of the most important climate parameter is the temperature of the barn atmosphere. This can be kept in the proper interval by either heating or cooling. Apart from the operation of technological solutions, the need for airing barns must be taken into consideration. This means there are special technical requirements for airing. Also, they can cause significant energy losses. The temperature limit of heating is mainly influenced by the technological temperature related to keeping the animal in question, its acceptable differences, the heat loss of the barn, and the airing requirement. Energy sources applicable to heating can be traditional sources (coal, oil, gas), renewable sources (solar, biomass, wind, water, or geothermal energy), or transformed energy (electricity). As these have specific operation systems, they also mean further challenges in implementing efficient energy usage. The usage of heating energy can either be optimised by the rational usage of the heating system, or machinery explicitly made for reserving energy. Sparing heating energy via recuperative heating exchange may cut costs significantly, which we also proved in this research with actual calculations. However, we have to state that the efficient usage of heat exchangers requires that the internal and external temperatures differ greatly, which has a huge impact on heat recovery performance.

DISTRICT HEATING SYSTEM DESIGN FOR RURAL NOVA SCOTIAN COMMUNITIES USING BUILDING SIMULATION AND ENERGY USAGE DATABASES

2009 ◽  
Vol 33 (1) ◽  
pp. 51-64 ◽  
Author(s):  
Jaspreet S. Nijjar ◽  
Alan S. Fung ◽  
Larry Hughes ◽  
Hessam Taherian
Keyword(s):  
System Design ◽  
Energy Demand ◽  
District Heating ◽  
Heating System ◽  
Energy System ◽  
Building Simulation ◽  
Energy Usage ◽  
District Heating System ◽  
District Energy ◽  
Heating Profiles

There are several benefits to district heating systems. The system design requires knowledge of community peak heating load and annual heating energy requirements. For this purpose, a residential energy model was developed using several energy usage databases. Hourly, peak, and annual heating demands were estimated by simulating 15 archetype houses using an hour-by-hour building simulation program, ENERPASS. Estimated heating profiles from model houses were used to design a district heating system for a hypothetical rural community in Nova Scotia. The findings show that building simulation is a very flexible and valuable tool in identifying the required peak and hourly energy demand of a community for the design of district energy system, and biomass district heating system can reduce community greenhouse gas emissions.

scholarly journals Reinforcement Learning-Based BEMS Architecture for Energy Usage Optimization

Sensors ◽  
2020 ◽  
Vol 20 (17) ◽  
pp. 4918 ◽  
Author(s):  
Sanguk Park ◽  
Sangmin Park ◽  
Myeong-in Choi ◽  
Sanghoon Lee ◽  
Tacklim Lee ◽  
...  
Keyword(s):  
Reinforcement Learning ◽  
Energy Saving ◽  
Energy Savings ◽  
Light Emitting Diode ◽  
Heating System ◽  
Existing Buildings ◽  
Information And Communications Technologies ◽  
Energy Usage ◽  
Oriented Energy ◽  
Usage Data

Currently, many intelligent building energy management systems (BEMSs) are emerging for saving energy in new and existing buildings and realizing a sustainable society worldwide. However, installing an intelligent BEMS in existing buildings does not realize an innovative and advanced society because it only involves simple equipment replacement (i.e., replacement of old equipment or LED (Light Emitting Diode) lamps) and energy savings based on a stand-alone system. Therefore, artificial intelligence (AI) is applied to a BEMS to implement intelligent energy optimization based on the latest ICT (Information and Communications Technologies) technology. AI can analyze energy usage data, predict future energy requirements, and establish an appropriate energy saving policy. In this paper, we present a dynamic heating, ventilation, and air conditioning (HVAC) scheduling method that collects, analyzes, and infers energy usage data to intelligently save energy in buildings based on reinforcement learning (RL). In this regard, a hotel is used as the testbed in this study. The proposed method collects, analyzes, and infers IoT data from a building to provide an energy saving policy to realize a futuristic HVAC (heating system) system based on RL. Through this process, a purpose-oriented energy saving methodology to achieve energy saving goals is proposed.

scholarly journals Building Ownership, Renovation Investments, and Energy Performance—A Study of Multi-Family Dwellings in Gothenburg

2018 ◽  
Vol 10 (5) ◽  
pp. 1684 ◽  
Author(s):  
Mikael Mangold ◽  
Magnus Österbring ◽  
Conny Overland ◽  
Tim Johansson ◽  
Holger Wallbaum
Keyword(s):  
Heating System ◽  
Energy Performance ◽  
Energy Usage ◽  
Building Stock ◽  
Economic Information ◽  
Efficiency Measures ◽  
Economic Background ◽  
Rapid Pace ◽  
The Impact ◽  
Official Information

The European building stock was renewed at a rapid pace during the period 1950–1975. In many European countries, the building stock from this time needs to be renovated, and there are opportunities to introduce energy efficiency measures in the renovation process. Information availability and increasingly available analysis tools make it possible to assess the impact of policy and regulation. This article describes methods developed for analyzing investments in renovation and energy performance based on building ownership and inhabitant socio-economic information developed for Swedish authorities, to be used for the Swedish national renovations strategy in 2019. This was done by analyzing measured energy usage and renovation investments made during the last 30 years, coupled with building specific official information of buildings and resident area characteristics, for multi-family dwellings in Gothenburg (N = 6319). The statistical analyses show that more costly renovations lead to decreasing energy usage for heating, but buildings that have been renovated during the last decades have a higher energy usage when accounting for current heating system, ownership, and resident socio-economic background. It is appropriate to include an affordability aspect in larger renovation projects since economically disadvantaged groups are over-represented in buildings with poorer energy performance.

scholarly journals Increasing Solar Energy Usage for Dwelling Heating, Using Solar Collectors and Medium Sized Vacuum Insulated Storage Tank

Energies ◽  
2018 ◽  
Vol 11 (7) ◽  
pp. 1832 ◽  
Author(s):  
Janar Kalder ◽  
Andres Annuk ◽  
Alo Allik ◽  
Eugen Kokin
Keyword(s):  
Heat Pump ◽  
Storage Tank ◽  
Storage System ◽  
Heating System ◽  
Heat Energy ◽  
Solar Irradiation ◽  
Water Tank ◽  
Energy Usage ◽  
Solar Heat ◽  
Direct Heating

This article describes a method for increasing the solar heat energy share in the heating of a dwelling. Solar irradiation is high in summer, in early autumn, and in spring, but during that same time, the heat demand of dwellings is low. This article describes a solution for storing solar heat energy in summertime as well as the calculations of the heat energy balance of such a storage system. The solar heat energy is stored in a thermally insulated water tank and used in the heating period. The heat is also stored in the ground if necessary, using the ground loop of the heat pump if the water tank’s temperature rises above a certain threshold. The stored heat energy is used directly for heating if the heat carrier temperature inside the tank is sufficient. If the temperature is too low for direct heating, then the heat pump can be used to extract the stored energy. The calculations are based on the solar irradiation measurements and heating demand data of a sample dwelling. The seasonal storing of solar heat energy can increase the solar heat energy usage and decrease the heat pump working time. The long-term storage tank capacity of 15 m3 can increase the direct heating from solar by 41%. The direct heating system efficiency is 51%.

Energy usage is crucial social issue

1981 ◽  
Author(s):  
Stuart Oskamp
Keyword(s):  
Social Issue ◽  
Energy Usage

Innovative electrotechnological systems to provide the temperature modes of technological pipelines

2019 ◽  
Vol 2 (1) ◽  
pp. 29-39 ◽  
Author(s):  
S. G. Konesev ◽  
P. A. Khlyupin
Keyword(s):  
Induction Heating ◽  
Thermal Exposure ◽  
Heating System ◽  
The Arctic ◽  
Process Conditions ◽  
Heating Systems ◽  
Fluid Properties ◽  
Low Efficiency ◽  
Extreme North ◽  
Induction Heating System

Introduction: the systems of thermal effects on thermo-dependent, viscous and highly viscous liquids under conditions of the Arctic and the Extreme North are considered. Low efficiency and danger of heating systems based on burned hydrocarbons, heated liquids and steam are shown. Electrothermal heating systems used to maintain thermo-dependent fluids in a fluid state are considered. The evaluation of the effectiveness of the application of the most common electrothermal system — heating cables (tapes). The most effective electrothermal system based on induction technologies has been determined. Materials and methods: considered methods of thermal exposure to maintain the fluid properties of thermo-dependent fluids at low extreme temperatures. Results: presents an induction heating system and options for its implementation in the Extreme North and the Arctic. Conclusions: induction heating system to minimize loss of product quality, improve the system performance under changing process conditions, eliminate fire product, to reduce the influence of the human factor.

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