heat exchanger cost 中文意思是什麼
heat exchanger cost
解釋
熱交換器成本-
The object to study in this paper is the electric heat reservoir boiler, which is used to supply heat water and bask for the resident population. the use of the system define the character of the output medium with the lower request on quality and parameter, at the same time, it ask the boiler should has the higher character on the respect of the cost, reliability, economy, and so on. hence, the paper carefully design and study the system for the choice and design of the boiler core heating componet, the lay of the heat exchanger, the working status of the heat reservoir equipment, the adjustment and control mode of to supply heat water. the study work mainly include underside some contents, forexample : 1. to confirm the heat medium parameter to adapt the requirements of the most of the heating equipments and to design the instruction of the boiler and heat reservoir as simple as possible
圍繞上述原則，本文從電熱鍋爐核心加熱元件的選型及設計、換熱面的布置、蓄熱設備的運行工況、供熱的調節方式以及控制方法進行了較細致的研究和計算，具體研究工作有以下幾個方面： 1 .根據使用要求，確定適用於多數採暖設備的熱介質參數，設計在結構型式上盡可能簡單的鍋爐和蓄熱器； 2 .對製造加熱元件電熱管的各種材料進行了對比和分析、在結構尺寸上進行了仔細的分析和計算，根據實際使用條件給出合理的設計，使其具有較高的可靠性和使用壽命； 3 .對不同換熱面布置形式進行傳熱分析。 -
Study on the synthesis rules of minimizing annual cost of heat exchanger networks
最小年度化費用換熱網路綜合的匹配規則研究 -
Enhanced heat transfer tube with spiral - surface has simple frame, cheap cost, and wide - ranging purpose. only few dirt can adhere to it and is easy to be washed. it has distinct strengthen effect, and can improve chief heat transfer coefficient at 35 - 40 % comparing with smooth tube exchanger which has same volume and pump power consumption
螺旋型表面強化管結構簡單，成本低廉，用途廣泛，結垢少且易清洗，其強化效果明顯，與體積、消耗泵功率相同的光管式換熱器相比，螺旋槽管換熱器可以將總傳熱系數提高35 40 ，因而備受人們青睞。 -
Promote condition to prevent parching, prolong continuous working time more than one time. larger applicant scope, both thin and glutinous materials can be adapted. only o - type ring should be replaced when maintaining without heavy tools and dead angles. wash thoroughly, high efficient, far more than coil heat exchanger. heat transmit coefficient is close to plate system, producing cost is high and the floor space is large
改善了結垢的狀況，連續生產時間延長一倍以上，適用范圍更加寬廣，稀薄狀、粘稠狀物料均能勝任，維護時只要更換o形圈，無需笨重的工具，無死角，清洗徹底，效率高，換熱效率遠大於盤管式，傳熱系數接近板式，製造成本較高，佔地面積較大。 -
The desired type of heat exchanger is determined by considering economic factors such as the total costs, comprised of the capital and operating costs. the cost - effectiveness of investments of each system is discussed, with parameters, such as the payback period, net present value and internal rate of return
分別計算了上述三種系統的cop 、逐月製冷制熱量，並分析了初投資、運行和維護費用、投資回收期、凈價值以及償還利率等經濟學參數對不同系統的影響。
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