彩宝贝

  • Hello, welcome to Changsha Zhongying Water Supply Equipment Co., Ltd.! Don't worry about high-level water supply, Zhongying can help you upstairs!
  • Enterprise WeChat
  • Add to favorites
  • contact us
National Service Hotline: 0731-8553-1110
彩53彩票网 万人炸金花 新橙彩票 电子游戏 360彩票 中国福彩网 一定牛彩票网 精选四肖三码 白小姐四肖必选一肖四不像 六肖中特精选

$('#dzmp').mouseover(function(){ $(this).find('.ercode').css('display','block'); }).mouseout(function(){ $(this).find('.ercode').css('display','none'); })
Hot Products Hot
  1. Micro things remote control ...

    Micro-things remote control type non-negative pressure water supply equipment 9 advantages 1, far ...

  2. Light and intelligent IoT ...

    Light and intelligent IoT-type inverter constant pressure water supply equipment Chinese LCD ...

  3. ZYW community high-level ...

    ZYW community high-level secondary water supply equipment is a kind of original pipe ...

  4. Stainless steel sewage ...

    Stainless steel sewage lifting equipment is a research and development of Changsha Zhongying Water Supply ...

Contact Us
Search Search
How to design a non-negative pressure water supply scheme and what factors need to be considered
Time: 2019-07-19 08:22 Source: win of Water: Water factory in winning hits: Times
How to design a non-negative pressure water supply scheme and what factors need to be considered


Non-negative pressure water supply is a new secondary pressurized water supply method that has appeared in recent years. The most widely used is the tank-type non-negative pressure water supply technology. The non-negative pressure water supply scheme is suitable for: The water pressure of the urban water supply network in the area is greater than 0.15MPA pressure, otherwise the situation of insufficient water intake will cause the equipment to be shut down for protection. If the pressure of the water pipe network is lower than 0.15MPA, choose the box-type non-negative pressure water supply scheme. During the comprehensive review and project approval phase of the engineering design scheme, it is necessary to meet both the requirements for construction water use and the applicable conditions for superimposed water supply. The design of the non-negative pressure water supply scheme requires the number of water supply households, the number of residential buildings, the highest level of the building, and water sources.
How to design a non-negative pressure water supply scheme

1. Energy-saving analysis of non-negative pressure water supply:
The use of non-negative pressure water supply equipment can make full use of the original pressure of the water pipe network, based on how much difference, how much. The average water supply pressure of the municipal water supply network of this project is 0.20Mpa, and the pressure of the tap water flowing into the basement water supply equipment is about 0.3 Mpa. After fully utilizing the water pressure, the comprehensive energy saving is about 40%. The maximum daily water consumption of the pressurized part is calculated according to 600m3, and the energy saving analysis is as follows: Pump power consumption: W = γQ H / η
In the formula: γ——the specific weight of water, 9.8kN / m3;
Q —— flow, m3 / s;
H —— height of water being lifted, m;
η——the efficiency of the pump unit.
The efficiency of the pump unit is η = η pump × η transmission × η electricity = 0.82 × 0.95 × 0.9 = 0.70
Among them: η pump is the efficiency of the water pump; η is the transmission efficiency; η electricity is the efficiency of the motor.
Conclusion: Compared with the traditional water supply method, the power consumption of the pump can be saved by using the negative pressure water supply method daily: W2 = 9.8kN / m3 × 960m3 × 30m / (3600 × 0.70) ≈112Kw • h.
The electricity cost per kWh is calculated at 0.9 yuan, which can save electricity bills: 112Kw • h × 0.9 yuan / Kw • h × 365≈36,800 yuan.



Previous: No more
Next: No more
Name:
Phone:
Your parameters:
Leave your inquiry questions and contact information, we will have a specialist to answer your questions
Can't see clearly? Click to replace Can't see clearly?
contract

QQ Online Customer Service

  • Online consultation
  • 点击这里给我发消息
  • 点击这里给我发消息
  • 点击这里给我发消息
Web Consulting