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首页> 外文会议>Influence of EEDI in ship design >IMPACT OF CHANGING HVAC VALVES TO PIBCVs ON ENERGY EFFICIENCY, EMISSIONS AND SHIP CONSTRUCTION COSTS
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IMPACT OF CHANGING HVAC VALVES TO PIBCVs ON ENERGY EFFICIENCY, EMISSIONS AND SHIP CONSTRUCTION COSTS

机译：改变暖通空调阀门对PIBCV的能效，排放和船舶建造成本的影响

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Heating, ventilating and air-conditioning can account for 30% of energy consumption, especially on passenger cruise ships. Large pumps distribute centrally chilled water around a ship via pipes to cabin "fan coils" and "air handling units" (heat exchangers), where the water absorbs heat from the rooms. Most marine vessels still use conventional distribution designs, which operate at higher pump speeds. The pumping is expensive and unnecessary and chiller efficiency is much reduced due to low delta-T syndrome. The pressure in the system must be hydronically balanced to ensure that the flow of chilled water is sufficient over the length of the ship and all distribution systems must be balanced at design flow, i.e. 100%. However, cooling and heating load vary with the weather and user demand. For 80% of time cooling demand is less than 25% and conventional manual systems cannot compensate, keeping costs closer to 100%. The "Pressure Independent Balancing & Control Valve" is a recent innovation, combining "automatic balancing" with a "control valve" and a "pressure controller" in one housing. It has revolutionised building design worldwide. Not only does it enable variable demand to be matched by variable supply, saving energy, it makes system design easier, reduces commissioning time and reduces the number of valves required. All while improving passenger comfort. By reducing required pump speed and preventing low delta-T syndrome, the Pressure Independent Balancing and Control Valve can save 25-30% of HVAC energy costs, equating to about US$1million yearly at today's oil prices for a large modern cruise ship.
机译：供暖，通风和空调可占能源消耗的30％，尤其是在客轮上。大型泵将集中冷却的水通过管道通过管道分配到船上的“风机盘管”和“空气处理单元”（热交换器），在那里水从房间吸收热量。大多数船舶仍使用常规分配设计，这些设计以较高的泵速运行。抽水是昂贵且不必要的，并且由于低的ΔT综合症，冷却器效率大大降低。系统中的压力必须进行水力平衡，以确保冷冻水的流量在船舶的整个长度上都足够，并且所有分配系统必须在设计流量（即100％）下保持平衡。但是，冷却和加热负荷随天气和用户需求而变化。在80％的时间内，制冷需求少于25％，传统的手动系统无法补偿，从而使成本接近100％。 “压力独立平衡与控制阀”是一项最新的创新，将“自动平衡”与“控制阀”和“压力控制器”组合在一个外壳中。它彻底改变了全球的建筑设计。它不仅能够使可变需求与可变供应相匹配，从而节省能源，还使系统设计更加容易，减少了调试时间并减少了所需的阀门数量。同时改善了乘客的舒适度。通过降低所需的泵速并防止发生低增量T综合症，压力独立平衡和控制阀可以节省25％至30％的HVAC能源成本，相当于当今大型现代游轮的油价，相当于每年约100万美元。

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