A novel study on a centrifugal humidifier for building cooling

IF 2 Q4 ENERGY & FUELS International Journal of Sustainable Energy Pub Date : 2022-06-26 DOI:10.1080/14786451.2022.2092107

Sampath Suranjan Salins, Shiva Kumar, S. Reddy, Prasanth Sreekumaran Nair

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Abstract

ABSTRACT Current work mainly deals with the design and construction of a centrifugal humidifier where the humidification and cooling are due to the soaking of the packing and the dispersion of the water from packing due to the centrifugal effect. Celdek pad 7090 is used as humidifying media, and water is used as a working substance. Experiments are performed by varying the water flow rate (WFR), air velocity (AV) and rotational packing speed. Performance parameters such as a difference in dry bulb temperature (DBT), difference in relative humidity (RH), saturation efficiency, coefficient of performance (COP) and evaporation rate (ER) are evaluated. Results showed that a water flow rate of 0.6 litres per minute (L/min), rotor speed of 150 rpm and air flow rate of 5 m/s gave the maximum performance. The current unit gave a maximum cooling efficiency, COP and ER equal to 79.23%, 5.24 and 0.90 g/s, respectively. Stationary and dynamic packing conditions are assessed where it is observed that the performance of dynamic packing is higher than that of the static case at all operating ranges. Celdek packing with dynamic conditions can be suitably applied to handle huge cooling loads, which encourages sustainable energy sources and reduces environmental pollution by limiting greenhouse gas emissions.

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建筑制冷用离心加湿器的新研究

摘要:本文主要研究的是一种离心式加湿器的设计和施工，该加湿器的加湿和冷却是通过填料的浸泡和离心作用使填料中的水分分散来实现的。Celdek垫7090被用作加湿介质，水被用作工作物质。实验通过改变水流速(WFR)、空气流速(AV)和旋转填料速度进行。评估了干球温差(DBT)、相对湿度(RH)、饱和效率、性能系数(COP)和蒸发速率(ER)等性能参数。结果表明，水流量为0.6升/分钟(L/min)，转子转速为150转/分，空气流速为5米/秒时，其性能最佳。当前机组的最大制冷效率为79.23%，COP和ER分别为5.24和0.90 g/s。评估静态和动态包装条件，其中观察到在所有操作范围内，动态包装的性能高于静态情况。具有动态条件的Celdek填料可以适当地应用于处理巨大的冷却负荷，从而鼓励可持续能源的使用，并通过限制温室气体排放减少环境污染。

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来源期刊

International Journal of Sustainable Energy ENERGY & FUELS-

CiteScore

5.70

自引率

3.20%

发文量

期刊介绍： Engineering and sustainable development are intrinsically linked. All capital plant and every consumable product depends on an engineering input through design, manufacture and operation, if not for the product itself then for the equipment required to process and transport the raw materials and the final product. Many aspects of sustainable development depend directly on appropriate and timely actions by engineers. Engineering is an extended process of analysis, synthesis, evaluation and execution and, therefore, it is argued that engineers must be involved from the outset of any proposal to develop sustainable solutions. Engineering embraces many disciplines and truly sustainable solutions are usually inter-disciplinary in nature.