发动机冷动系统常见故障的原因及排除方法

介绍了发动机冷却系统水温异常引起的不良后果，分析了冷却系统常见故障的主要原因，并提供了排除故障的方法。     

蒸发式冷凝器用于火电厂冷却系统中的可行性分析

概述了火电厂冷却系统的特点，介绍了蒸发式冷凝器的工作原理，基于朗肯循环详细分析了蒸发式冷凝器用在火电厂冷却系统中所具有的优点，从而提出了在我国运用这项技术的必要性，并通过两个实例说明蒸发式冷凝器用于火电厂的冷却系统是可行的。     

感应炉新型冷却器

介绍了感应炉冷却系统上的重大突破，阐述了空气冷却器的工作原理、设备组成、关键技术，以及与传统冷却系统的比较。     

筑路机械发动机冷却系统的改进设计

针对筑路机械发动机和液压油过热的问题对原冷却系统进行了改进设计，采用液力驱动冷却系统和电力驱动冷却系统把发动机和液压油的散热问题分开解决，两种风扇的冷却能力都可用微控单元ECU根据发动机和液压油不同的散热需要进行控制，可以较好地解决筑路机械发动机和液压系统同时过热的问题。笔者对冷却系统的液力驱动进行了设计计算。     

汽车冷却系统水温对发动机性能的影响

阐述了冷却系统水温异常对发动机性能的影响，并对汽车冷却系统水温异常的原因作了简要分析。     

PG6551(B)燃气轮机进气冷却系统的研制

开发了一种可全年利用烟气余热的联合循环双工况燃气轮机进气冷却系统。在气温高、进气冷却系统投用的情况下，能有效增加燃气轮机出力；在气温低、低压加热器投用的情况下，通过回收烟气余热，增加余热锅炉出力，提高蒸汽轮机负荷。介绍了进气冷却系统的工作原理，分析了进气冷却运行方式的初步运行结果。     

285F直喷式风冷柴油机冷却系统设计

论述了２８５Ｆ直喷式风冷柴油机的冷却系统设计，剖析了冷却系统的总体布置，风扇设计，冷却风量分配与相关零件设计，并通过受热零件温度场的测定和分析，对冷却系统的设计作了评价。     

板坯连铸机冷却水系统的完善与应用

针对北方某厂板坯连铸机生产状况，对其软水冷却系统、设备净环水冷却系统和二次喷淋浊环水冷却系统进行了研究分析，提出了冷却水系统的完善方案，解决了连铸水系统的稳定性，避免了频繁开停泵对连铸水系统高压电机的冲击及冬季长时间停机或检修造成设备和管道系统内部滞水而冻结，提高了事故处理的灵活性和环境适应性。     

内燃机车干式冷却系统的研究与应用

阐述了内燃机车干式冷却系统的设计思路、结构组成，介绍了系统中重要部件的功能。结合干式冷却系统与柴油机配套性能试验及其在DF8CJ型交流传动货运机车上的装车设计，阐述了干式冷却系统的优点及需要注意的问题。还简要介绍了该系统在内燃机车上的实际运用情况。     

工程机械发动机和液压系统智能冷却系统

本文设计了一种新型冷却系统，系统由单片机智能控制，能够有效的解决工程设备在实际施工中发动机和液压传动系统过热的问题。系统包括发动机冷却系统和液压油冷却系统两个部分，这两个部分的分别工作使得发动机和液压系统能在适宜的温度下工作，并且系统还具有低耗能、易安装的特点。     

Cooling System Design

Cooling water systems and refrigeration systems are required to provide cold utility to chemical processes. Little attention has been placed on the structure and system interactions between cooling systems and processes. In this article, an integrated design and retrofit method for cooling systems is reviewed. For cooling water system design, a new design methodology has been developed for debottlenecking of cooling water systems. Reuse of cooling water between different cooling duties enables cooling water networks to be designed with series arrangements. This allows better cooling tower performance and increased cooling tower capacity. The interactions between the performance of the cooling tower and the design of cooling water networks are explored systematically. For refrigeration system design, a systematic design and retrofit method has been proposed for refrigeration systems using pure or mixed refrigerants. A graphical exergy analysis method, the z -H diagram, is introduced to help engineers obtain understanding and insights into complex refrigeration systems. The systematic synthesis method proposed in this article can greatly improve operating efficiency for refrigerant systems.     

Solar absorption cooling with low grade heat source — a strategy of development in South China

Based on experiences with an operating solar cooling system in south China, a low temperature driven solar cooling system has been proposed, and a new model of two-stage lithium bromide absorption chiller has been developed. Test results have proved that the two-stage chiller could be driven by low temperature hot water ranging from 60 to 75°C, which can be easily provided by conventional solar hot water systems. Relying on the successes of the above system, an integrated solar cooling and heating system with two-stage absorption chiller was constructed (cooling CAPACITY=100 kW). Preliminary operating data of the system has indicated that this type of system could be efficient and cost effective. Compared to the conventional cooling system (with single-stage chiller), the proposed system with a two-stage chiller could achieve roughly the same total COP as of the conventional system with a cost reduction of about 50%.     

A new integrated system with cooling storage in soil and ground-coupled heat pump

For the purpose of decreasing the peak electricity, balancing the on and off-peak electric load and utilizing the renewable geothermal energy, a new integrated system with cooling storage in soil and a ground-coupled heat pump is presented. In the integrated system, the moist soil acts as the material for cooling storage, and pipes serve as the cooling storage devices and geothermal heat exchangers simultaneously. In the cooling season, the cooling energy is stored in soil during the off-peak period and is extracted for space cooling during the on-peak period. While in other seasons, the system works as a ground-coupled heat pump for heating or cooling. A mathematical model which describes the charging and discharging processes of the integrated system has been developed and validated, and a computer code has been implemented to simulate the operational performance of cooling charging and discharging in soil. A parametric study indicates that the charging inlet temperature, tube diameter, moisture content of soil and pipe distance are important factors in determining the cyclic performance of the integrated system.     

广州大学城区域供冷系统的节能优化

作为一种节能和环保的能源利用方式，广州大学城采用了分布式能源系统的区域供冷形式。但是，在实际运行中，由于缺乏有效的冷量调节系统，使得区域供冷冷量浪费严重、费用高昂。针对存在的问题，结合工程实例，本文对区域供冷进行了节能优化，改造了区域供冷的控制系统。这一改造方案在实际工程中成功运用说明，只有配备了良好的控制系统，区域供冷才能发挥自身的优势，实现节能和环保。     

A study of a polymer-based radiative cooling system

A radiative cooling system consisting of unglazed flat plate radiators, water as heat carrier and a reservoir is presented. The radiators are twin-wall sheets made of a modified PPO (polyphenylenoxid) resin, which are proposed as low cost roof integrated modules. The thermal performance of a system with a radiator aperture area of 5.3 m² and reservoir volume of 280 l has been investigated in experiments for Oslo climate. A parameterisation for the cooling performance of a tilted radiator surface for clear and cloudy atmospheres is proposed and applied to model the experimental results. The impact of the tilt angle, the aperture area and the reservoir volume on the cooling performance has been studied in simulations. The feasibility of a radiative cooling system designed for a single-family house at southern latitudes has been modelled. Except for mid-summer ambient temperature and high relative humidity, the simulations show that the radiative cooling system seems to cover the demand.     

卷烟厂制冷系统能源选择及应用

介绍了卷烟厂制冷系统技术改造面临的情况，新的制冷系统中采用了高效环保能源。通过制冷系统的技术改造，既保证了车间的温、湿度，同时实现节能，环保的要求。     

用于某发电机组的TBD620V12柴油机冷却系统的分水设计

为了满足由TBD620V12柴油机和1FR6 506-4三相异步发电机组成的发电机组中发电机的冷却需要,需分16 m3/h海水给发电机。通过计算该柴油机冷却系统传递的总热量及海水泵的流量,证明了分水的可行性;据传热学理论证明了海水在特征管路中的流动是紊流状态;通过完善原有结构设计实现分水,台架试验证明该柴油机的冷却系统在分水后仍能保证良好的冷却效果。     

Performance evaluation of a solar-powered flat-plate multichannel liquid desiccant air conditioning system

There has been a limited application of liquid desiccant (LD) dehumidification systems in space air conditioning until now. The key elements responsible for this restricted implementation are leakage of desiccant solution, corrosion of components, and solution carryover along with the processed air to the space to be conditioned. To remove these problems, an evacuated tube solar heat collector-driven multichannel liquid desiccant air conditioning system has been proposed and experimentally investigated. In this study, dehumidification and regeneration rate, their effectiveness, cooling effect of the dehumidifier, and indirect evaporative cooling unit have been analyzed. The results obtained indicate that the process air has been dehumidified and cooled by 6.32 g kg⁻¹ and 5.26°C, respectively. The regeneration rate and effectiveness have been obtained to be 0.26 g s⁻¹ and 0.31, respectively. In terms of the cooling effect, the system output of 0.703 and 0.130 kW has been obtained from the dehumidifier and indirect evaporative cooling unit of the system, respectively. The proposed system validates the possibility of the novel solar-powered liquid desiccant air conditioning system concept and provides growth and development of the LD air conditioning technology for space air conditioning.     

枫泾换流站内冷水主循环泵切换逻辑分析及措施

内冷水系统主循环泵是换流站的关键设备,其驱动内冷水系统的冷却水流动,将换流阀工作时产生的热量带至户外冷却设备,完成换流阀与户外冷却设备的冷热交换。介绍了±500kV枫泾换流站内冷水系统主循环泵切换工作原理,通过阀冷却系统深度隐患排查,分析了内冷水系统中主控与被控的关系,控制系统中输入与输出的关系,切换逻辑中不合理设置和抗干扰差等隐患,提出了消除隐患的整改措施,并建议增加变频器直流侧或外接平波电容器,防止变频器因交流扰动重启而频繁切泵,增加事故隐患。     

Liquid desiccant based two-stage evaporative cooling system using reverse osmosis (RO) process for regeneration

This paper presents preliminary findings of the energy analysis of a cooling system with two-stage evaporative coolers using liquid desiccant dehumidifier between the stages. The proposed evaporative cooling system utilizes air humidity for cooling in humid areas and requires no additional water supply. The major energy requirement associated with this cooling system is the energy for regenerating the weak liquid desiccant. Reverse osmosis process is considered for regeneration by mechanical energy and MFI zeolite membrane is proposed for separation of water from the weak desiccant solution. Energy analysis has been carried out for the proposed cooling system. The COP of the proposed cooling system is defined as the cooling effect by the mass rate of water evaporated in the system divided by the amount of energy supplied to the system, that is, the COP is independent of the energy source.