Applications and Differences Between Medium/High-Pressure and Low-Pressure UV Lamps

About Medium-Voltage Lamps Introduction

(1) Characteristics of Medium-Pressure UV Lamps:

Single tube high power (400W-10,000W per tube)

2. Energy Efficiency

3. A more compact and space-saving size (length not exceeding 700mm)

4. Reduced the number of UV lamps and the reactor volume (969 tons/hour flow rate, only 4 lamp tubes, extremely compact)

5. Expanded wavelength range with effective irradiation at 200-400nm (effectively removes bacteria, viruses, chloramine, chloride, and trichloramine).

6. Ultraviolet Biological Effects

(II) Medium-pressure (MP) UV lamps have some significant differences compared to the more widely known low-pressure (LP) UV lamps, which are key reasons for choosing medium-pressure UV systems:

1. Some applications may require the use of medium-pressure UV lamps due to their emission of a wider wavelength range. These applications include:

In public swimming pools, only ultraviolet light with a wavelength of 200-400nm can effectively eliminate chloramines (combined chlorine) and the taste of chlorine.

2. Two other significant reasons for employing medium-pressure UV light technology are:

1) To minimize the installation footprint, the high-power medium-voltage lamps significantly reduce the size of the UV reactor.

2) Due to the higher power of individual medium-pressure UV lamps, the usage quantity of UV lamps is significantly reduced.

3) Mid-pressure UV lamps can withstand higher pressure and a wider temperature range, making them suitable for more demanding and stringent usage environments (BEST UV can withstand up to 16 kg of pressure and withstand temperatures of up to 100 degrees Celsius).

About the Introduction of Low-Pressure (LP) Lamps:

Low-pressure (LP) UV Lamps Features

Important Differences Between Low-Pressure (LP) and Medium-Pressure (MP) UV Lamps:

The power consumption of individual light tubes is relatively low (individual light tubes have a power consumption of less than 320W).

2. Sterilization Efficiency: Compared to medium-pressure lamps, the sterilization time is longer (from zero to a few seconds for low-pressure, less than one second for medium-pressure).

3. Low-pressure (LP) UV lamps increase in length as the wattage rises.

4. The demand for larger capacity UV reactors necessitates setting the reactor's length based on the number and length of the tubes. As a result, high-power low-pressure UV systems tend to take up more space.

5. Low-pressure ultraviolet lamps emit wavelengths only at 254nm.

(II) Some applications of low-pressure ultraviolet lamps are primarily due to:

Low processing volume and power requirements, particularly in the water purification sector.

2. The requirement for frequent on/off operations necessitates that medium-pressure UV systems are typically managed by a central controller, which includes delay protection for both activation and shutdown. Consequently, frequent on/off operations are not feasible.

3. Low-pressure ultraviolet lamps offer high conversion efficiency, with up to 40% of power converted into sterilization energy. Additionally, the wavelength of 254 nanometers is more targeted in disinfection against bacteria and viruses.