vrf

Experimental researches on relationship between the performance of VRF refrigeration loop and vapor-liquid two-phases flow pattern

变制冷剂流量制冷循环性能与气液两相流流型的研究制冷剂流量和风量对再循环蒸发器传热性能影响

Discusses a few problems in VRF air condition system design

论多联机空调系统设计中的几个问题

Analysis of Energy Use in Water Source VRF System and Evaluation for Its Use in China

水源VRF变频空调系统能耗分析及其在我国应用的评价

Water Loop VRF Air Conditioning System and Its Project Application

水环VRF空调系统及其工程应用

Application of VRF Air Conditioning System in Service Area of Expressway Project

多联式空调机组在高速公路服务区工程中应用

Design standard for energy efficiency of public buildings and VRF air conditioning

《公共建筑节能设计标准》与商用多联机空调

This paper presents a control algorithm and the control algorithm of the VRF air conditioning system .

本文对VRF空调系统在全制冷模式下的特性进行定性分析，提出了一种VRF空调系统的控制算法，确定了VRF空调系统的控制策略。

Self-rule with Interaction Control Strategy of VRF Air Conditioning System

VRF空调系统制冷循环的自治协调控制思想

The Study of VRF to VRF Network Technique Application

VRFtoVRF组网技术应用研究

So it can be referenced for the design of VRF air conditioning system .

本文可以为VRF空调系统的设计作参考。

Experimental research on commercial digital VRF multi-connected units with sub-cooled ice storage system ;

根据大过冷度制冷循环原理，开发了新型商用数码多联机组并在样机上进行了实验研究。

Application of VRF air conditioning units

多联式空调机组的应用

Construction of VRV / VRF Multi-Online Energy Saving System for Air Conditioning in Office Building

办公楼变制冷剂流量多联机空调节能系统的施工

Map-based VRF technology is the research hotspot .

基于电子地图的变量施肥技术已成为研究的热点。

The Effect of VRF on Cyclin and Cell Cycle in UMR 106 Osteosarcoma Cells

中药固真方对UMR106细胞周期蛋白表达及细胞周期的影响

Compared with traditional methods of Variable Rate Fertilization , this paper gives an introduction of a new VRF method based on RS and GIS .

本文通过与传统变量施肥方法相比较介绍了基于RS和GIS的变量施肥方法及其在系统中实现。

Application of Field-Bus in VRF Multi-Split Air-Conditioning System

现场总线在变制冷剂流量多联机系统中的应用

The basis has been supplied to the design and operation control strategy of the water-cooled VRF system through comparing the results of the various conditions .

因此本文对不同的水温工况和不同负荷的情况进行了仿真，通过对各个工况的结果进行对比分析，为水冷多联机系统的设计和运行控制策略的制定提供了基础。

The discussion of the technology development direction of small-sized VRF central air conditioning & The Performance Comparison of Inverter controlled , Variable capacity and Digital Scroll

变频、变容、数码涡旋性能对比&探讨小型变能力中央空调技术发展方向

Most domestic VRF applicators currently used MCU or PLC as their core controller , so they could not provide a friendly user interface .

但目前国内研制的绝大多数变量施肥机都是采用单片机或PLC作为主控制器，其不能提供友好的用户交互界面。

The VRF design based on the interfaces of user site settled the problem of the management of overlap VPN , which is proved rational by logic consequence .

针对用户VPN复用的控制问题，提出了基于用户站点接口的VRF设计，并通过逻辑推理证明了该设计的合理性。

Variable rate fertilizer ( VRF ) technology is an important part of precision agriculture system , and is an effective way to stop the irrational use of fertilizer in our country .

变量施肥技术是精准农业体系的重要组成部分，是解决我国化肥投入不合理问题的有效途径。

Making use of Data Envelopment Analysis ( DEA ), he paper compared the technical efficiency , scale benefit , economic benefit and eco-social benefit of VRF with TF .

利用数据包络分析对变量施肥和传统施肥的技术效率、规模收益、经济效益和生态社会效益进行了综合评价和对比。

Synthesis of High Efficient and Environmental Scale Inhibitor for Circulated Cooling Water ; Experimental researches on relationship between the performance of VRF refrigeration loop and vapor-liquid two-phases flow pattern

高效环保型循环冷却水处理剂的开发研制变制冷剂流量制冷循环性能与气液两相流流型的研究

This paper put forward the VRF design based on the interfaces of user site and the mechanism of RT authentication used in VRF aiming at the shortage of current VPN management .

针对当前VPN管理方案的不足，提出基于用户站点接口的VRF设计和VRF的RT认证机制。

Water source VRF air conditioning system is a new generation of VRF air-conditioning system , a collection of VRF and water source heat pump , with incomparable advantages of the traditional air-conditioning systems .

水源VRF空调系统是新一代的VRF空调系统，集合了VRF空调系统和水源（环）热泵空调系统二者的优点，具有传统空调系统所没有的特点。

In this paper , the hybrid VRF air conditioning system with soil source and cooling tower is a new type of air-conditioning system , more energy-saving and environmental protection than the previous VRF air-conditioning system .

而本文提出的土壤源-冷却塔复合式VRF空调系统是一种新型空调系统，较之以前的空调系统在节能和环保方面都具有优势。

During 2003 and 2004 , the experiments of variable rate fertilization ( VRF ) for maize were carried out using the VRF system , which was researched and produced by the authors themselves .

采用自主开发设计的基于GPS和GIS技术的自动变量施肥系统，于2003、2004年间进行了玉米种植条件下变量施肥田间试验。

The fluctuation does not influence technical efficiency and scale profit evaluation , but has great influence on the analysis of economic benefit . When corn price goes up , the economic benefit of VRF is more obvious .

玉米价格波动对技术效率评价和规模收益评价没有影响，对经济效益分析产生较大的影响，玉米价格越高，变量施肥经济效益越明显。

VRF results in higher maize yield to a certain extent than that of traditional fertilization , and can not only cut down input but also ( increase ) output under the condition of reasonable fertilizer application rate .

与相邻传统施肥地块相比，变量施肥在一定程度上增加了玉米产量，在合理控制化肥用量的情况下，可以达到既减少投入又增加产量的目的。