The VVT is called variable volume because it delivers a variable volume to each zone, as load dictates. It is called variable temperature because the temperature of the air supplied by the central unit varies with time. The VVT is an economical all air zone system that is ideal for many commercial jobs.

2019年5月23日 · There are two types to consider: VAV (variable air volume) and VVT (variable volume and temperature) HVAC systems. Overall, both systems help you cut back on utility costs compared to CAV (constant air volume) systems of years past.

VVT systems are a popular solution for heating and cooling multiple zone applications in small to medium size buildings. In addition to the central RTU, VPAC, or split system, the VVT components include the air source unit controller, bypass system, zone dampers, zone and bypass controllers, space sensors, and necessary safeties

韩国现代轿车所开发的cvvt是一种通过电子液压控制系统改变凸轮轴打开进气门的时间早晚，从而控制所需的气门重叠角的技术。 这项技术着重于第一个字母C （Continue连续），强调根据发动机的工作状况连续变化，时时控制气门重叠角的大小，从而改变气缸进 ...

VVT is an HVAC control system that stands for Variable Volume & Variable Temperature control. VVT is a cost effective way for building occupants to maintain & control temperature by creating individual zones within the conditioned space. VVT systems were developed to convert a constant volume unit to a VVT type system called change over bypass ...

CVVT是Continue（持续的）Variable（可变的）Valve（气门）Timing（正时）的缩写，翻译过来就是持续可变的气门正时，我们通常称其为连续可变气门正时。 早期的可变气门正时系统功能比较简单，只有两个调节位置，一种是低转速位置，另一种是高转速位置。

2021年7月19日 · VAV HVAC systems, or variable air volume, regulate the quantity and temperature of conditioned air based on the set temperature. With this system, airflow is varied at a constant temperature. To provide consistent pressure, terminals close …

A variable volume and temperature (VVT) HVAC system uses multiple airflow dampening controls to regulate the airflow from an air handling unit (AHU). This allows a single AHU to meet the heating or air conditioning needs of multiple zones without purchasing additional AHU's.

2005年1月26日 · VAV terms are usually set to about half their cfm in the heating mode , heat is usually electric reheat or hw reheat. Series fan, constant volume boxes with hot water reheat is the best situation. JMHO, with these types of boxes you can usually eliminate a need for additional perimeter heat.

2023年3月28日 · When deciding on air zone HVAC systems, the Variable Volume & Temperature (VVT) is an HVAC control system with many advantages. The VVT system overview is a cost effective way for building occupants to maintain & control temperature. Read on to learn how a VVT HVAC system is traditionally constructed and the benefits it can have for your business