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实验室监测与控制

实验结果的准确性和可靠性

实验室监测与控制

实验室在生命科学领域至关重要，常存放需严格监测与管控的危险物质。保障实验人员安全、维护实验数据完整性以及实现能源高效利用，是实验室环境管理的首要任务。高效实验室监测与控制系统在降低运营成本的同时，能精准维持最佳温湿度及空气质量。通过采用先进的变风量(VAV)控制技术，实验室既可满足严苛的安全规范，又能实现节能目标。

安全实验室的最佳气流控制

实验室依赖精确的气流控制来减少污染物扩散。VAV系统实时调节气流，保持送风与排风之间的恰当平衡。这确保了实验室空间相对于相邻区域保持负压，防止有害物质外泄。先进的控制选项，如带压力反馈的气流追踪，提供了更高的安全性，尤其适用于高风险或高防护等级的实验室。

节能的通风解决方案

鉴于实验室的能耗通常是办公空间的六倍之多，控制通风系统是降低运营成本的关键。变风量（VAV）控制系统能根据实时需求调节气流，仅在必要时维持室内气压与温度。相比全天候运行的定风量系统，这一智能系统可显著节省能源。此外，集成SACV（送风控制阀）等高效终端设备，可优化通风效果，降低运行成本。

封闭空间先进的通风柜监控

通风柜对于保护实验室工作人员免受有害化学品暴露至关重要。采用VAV通风柜控制策略后，系统会根据视窗位置和用户存在状态，仅在必要时进行排风。侧壁感应控制系统，能够检测表面风速的变化，提供最高级别的安全保障，确保有害物质的实时封闭并优化实验室气流。

技术

Real Measurement Matters
Types of Fume Hood and Lab Room Controls
Types of VAV Laboratory Room Control Strategies

Real Measurement Matters in Lab Controls

The use of chemicals and other potentially hazardous compounds separates laboratories from other types of building spaces. Keeping lab and building occupants safe must be the primary concern. Temperature and humidity control must be tightly controlled for occupant comfort and experiment integrity.

Laboratories typically have high ventilation, driven by fume hood exhaust flows and air change rates, to meet these concerns. But high ventilation causes high operating costs. In fact, laboratories use six times the energy of a similar office building. Energy-efficiency is of considerable importance to minimize operating costs.

Types of Fume Hood and Lab Room Controls

Laboratories are normally maintained at a lower (negative) pressure than surrounding building areas help prevent contaminants from spreading throughout a building. Standard types of fume hood and laboratory control types are:

Good: Constant Volume (CV) Controls
Air volume supplied and exhausted does not change and remains constant 24/7. These systems are expensive to operate and limit future expansion.
Better: Variable Air Volume (VAV) Controls
Reduce airflows to the minimum required to maintain room pressure or balance, ventilation and temperature based on current conditions in the laboratory. These systems offer the greatest energy savings and best expandability in the future.

Types of VAV Laboratory Room Control Strategies

In labs with VAV controls, air supply and exhaust adjust to fume hood and temperature changes. For open labs, flow tracking controls ensure stable airflow by maintaining lab balance. In enclosed labs, flow tracking with pressure feedback adds safety by measuring pressure differentials. High containment labs use direct pressure controls for the most accurate room pressure control, ideal for small, high-hazard labs.

Frequently asked questions

Q. How does VAV control work in fume hood alcoves?

In fume hood alcoves, VAV controls adjust airflows to maintain negative room balance, ensuring secondary containment. This saves energy by reducing excess airflow while maintaining lab safety. Read more

Q. What is the control strategy for open lab designs?

Open labs use VAV control to manage airflow and maintain negative room pressure. This ensures adequate ventilation for fume hoods, snorkels, and biosafety cabinets, while optimizing energy use. Read more

Q. How do enclosed labs maintain safety with VAV systems?

Enclosed labs use VAV controls to continuously monitor room balance and pressure. Negative pressure is maintained to ensure containment, while adjusting ventilation and temperature for comfort. Read more

Q. How do VAV systems manage airflow in teaching labs?

Teaching labs use VAV controls to maintain a stable room balance with frequently open doors. Fume hood exhaust ensures minimum ventilation, and the system adjusts temperature for comfort and safety. Read more

Q. What safety features are included in VAV control systems for labs?

VAV systems offer real-time monitoring of fume hood face velocity and room pressure, with best-in-class accuracy for air and pressure measurements to ensure safety and containment. Read more

Q. How do I ensure accurate environmental conditions in the lab?

Regularly calibrate and maintain your monitoring instruments, use reliable sensors for temperature, humidity, and air quality, and adhere to standard operating procedures for environmental control. Implement a robust data logging system to track conditions over time and address any deviations promptly.

Q. What should I do if there is a deviation from the set environmental parameters?

First, check for any malfunction or calibration issues with your monitoring equipment. Next, investigate potential causes for the deviation, such as equipment failures, external environmental factors, or human error. Correct the issue, document the incident, and review procedures to prevent future occurrences.

Q. How can I improve the efficiency of lab environmental controls?

Optimize the placement and calibration of sensors for better accuracy, automate control systems for real-time adjustments, and use data analytics to identify patterns or potential issues. Regularly review and update maintenance schedules to ensure all equipment operates at peak performance.

Driving Safety Through Efficient Lab Design

VAV Control Solutions for Various Lab Designs

VAV control systems enhance lab safety by regulating airflow, temperature, and room balance while saving energy, with tailored solutions for fume hoods, open, enclosed, teaching, and high containment labs.

实验结果的准确性和可靠性

实验室监测与控制

技术

Frequently asked questions

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