Analysis of Inside Thermal Response Characteristic by Radiant Cooling System for Different-Level Energy-Efficient Building

2020 ◽  
pp. 613-622
Author(s):  
Zhengrong Li ◽  
Dongkai Zhang ◽  
Shunyao Lu ◽  
Xiangyun Chen
Keyword(s):  
Energy Efficient ◽  
Cooling System ◽  
Thermal Response ◽  
Response Characteristic ◽  
Level Energy ◽  
Radiant Cooling ◽  
Energy Efficient Building

scholarly journals Experimental Study on Thermal Response Characteristics of Indoor Environment with Modular Radiant Cooling System

Energies ◽  
2020 ◽  
Vol 13 (19) ◽  
pp. 5012
Author(s):  
Zhengrong Li ◽  
Dongkai Zhang ◽  
Cui Li
Keyword(s):  
Water Temperature ◽  
Indoor Air ◽  
Indoor Environment ◽  
Cooling System ◽  
Thermal Response ◽  
Low Energy ◽  
Response Characteristics ◽  
Radiant Cooling ◽  
Low Energy Buildings ◽  
Supply Water

The radiant cooling system has a substantial energy-saving effect and can be widely applied in different kinds of low-energy buildings. This article reports the experimental study of the design strategy of the radiant cooling system in low-energy buildings from the perspective of thermal response characteristics of an indoor environment. Two types of a modular radiant cooling system, namely, the copper tube radiant cooling (CTRC) and the capillary radiant cooling (CRC) systems, were investigated. The experiments were conducted in two office rooms characterized by low energy consumption. In total, 16 cases (eight for CTRC and eight for CRC) were analyzed, covering supply water temperature with a range of 12–19 °C. The experimental results show that the supply water temperature has a more substantial effect on the temperature distribution of the envelope for CTRC, than that of CRC. The indoor air temperature stratification is acceptable in the active area of the occupant with a modular radiant cooling system. Moreover, the thermal response of the envelope is highly sensitive to the lower supply water temperature (below 16 °C) using CTRC and to the higher supply water temperature (above 15 °C) using CRC. The low supply water temperature (below 15 °C) can improve the thermal stability speed of indoor air to a greater degree using CTRC, than that of CRC. The supply water temperature for CTRC with 15–16 °C, and 18–19 °C for CRC in low-energy buildings can exert an optimal cooling benefit.

Renewable Night Cooled Chill Water Source for Energy Efficient Indoor Radiant Cooling

2016 ◽  
Vol 26 ◽  
pp. 86-98 ◽  
Author(s):  
Muhammad Syukri Imran ◽  
Azhaili Baharun ◽  
Siti Halipah Ibrahim ◽  
Wan Azlan bin Wan Zainal Abidin
Keyword(s):  
Low Income ◽  
Energy Efficient ◽  
Cooling System ◽  
Operating Cost ◽  
Water Source ◽  
Cold Season ◽  
Cooling Medium ◽  
Radiant Cooling ◽  
Hot Season ◽  
System Operating

This study investigates cooling of water at night in Malaysian climate as renewable cooling medium source for radiant cooling purpose. An experiment with a 1.95 m2 steel roof rig structure was constructed and night cooling cycle was conducted during the hot season and cold season of the year. Regression model was developed to predict water temperature after the night cooling process and the corresponding water and roof ratio was established. An annual simulation of a low income home model retrofitted with radiant cooling system charged by night cooled water as cooling medium shows that 99% of the time the thermal condition could meet ISO 7730 category C PMV between-0.7 and + 0.7 . For an outdoor ASHRAE design day condition, the peak indoor operative temperature of 37oC could be lowered to about 30oC with the use of radiant cooling system. The calculated energy saving for the home model was 85% or about 15% of the conventional air system operating cost.

COST-EFFECTIVE TECHNOLOGIES TO CONTROL INDOOR AIR QUALITY AND COMFORT IN ENERGY EFFICIENT BUILDING RETROFITTING

2015 ◽  
Vol 14 (7) ◽  
pp. 1487-1494 ◽  
Author(s):  
Marco Arnesano ◽  
Gian Marco Revel ◽  
Filippo Pietroni ◽  
Jurgen Frick ◽  
Manuela Reichert ◽  
...  
Keyword(s):  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Energy Efficient ◽  
Cost Effective ◽  
Energy Efficient Building

PROJECT ENGINEERING & FEASIBILITY: A BRIEF REVIEW

2020 ◽  
Author(s):  
JAYDIP DATTA
Keyword(s):  
Data Structure ◽  
Energy Efficient ◽  
Management System ◽  
Chemical Engineering ◽  
Operation Management ◽  
Energy Audit ◽  
Industrial Economics ◽  
Industrial Project ◽  
Key Aspects ◽  
Energy Efficient Building

In this Review we will point out some key aspects of Industrial Project Feasibility w.r.t Optimization, Operation Management, Energy Audit necessary to make a project successful . Continued Work : OPTIMISATION: A VIEW FROM INDUSTRIAL ECONOMICS ,DATA STRUCTURE & MANAGEMENT SYSTEM : AN INTEGRATED ,CHEMICAL ENGINEERING : A VIEW FROM MY EXPERIANCE ,. ND FEBBRAIO 2020 , Chapter 6 , Energy efficient building , pp. 58-61

scholarly journals Low-Power Multiplexer Structures Targeting Efficient QCA Nanotechnology Circuit Designs

Electronics ◽  
2021 ◽  
Vol 10 (16) ◽  
pp. 1885
Author(s):  
Amjad Almatrood ◽  
Aby K. George ◽  
Harpreet Singh
Keyword(s):  
Energy Efficient ◽  
Building Blocks ◽  
Switching Frequency ◽  
Circuit Implementation ◽  
Suitable Candidate ◽  
Quantum Dot Cellular Automata ◽  
Performance Factors ◽  
Integration Density ◽  
Qca Circuits ◽  
Energy Efficient Building

Quantum-dot cellular automata (QCA) technology is considered to be a possible alternative for circuit implementation in terms of energy efficiency, integration density and switching frequency. Multiplexer (MUX) can be considered to be a suitable candidate for designing QCA circuits. In this paper, two different structures of energy-efficient 2×1 MUX designs are proposed. These MUXes outperform the best existing design in terms of power consumption with approximate reductions of 26% and 35%. Moreover, similar or better performance factors such as area and latency are achieved compared to the available designs. These MUX structures can be used as fundamental energy-efficient building blocks for replacing the majority-based structures in QCA. The scalability property of the proposed MUXes is excellent and can be used for energy-efficient complex QCA circuit designs.

Analytical modeling of a radiant cooling system for thermal performance analysis

2021 ◽  
Author(s):  
Arup Chandra Saha ◽  
Vikas Verma ◽  
Rahul Tarodiya ◽  
M.R. Mahboob ◽  
Rajesh Kumar
Keyword(s):  
Performance Analysis ◽  
Thermal Performance ◽  
Analytical Modeling ◽  
Cooling System ◽  
Radiant Cooling
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