EKS-HUM-037 / 除湿技术与性能

额定除湿量

Rated Dehumidification Capacity

额定除湿量是除湿设备在明确试验方法和指定运行条件下标定的除水速率。

缩写: MRC
别名: 额定除湿能力, 额定除水量

物理量、符号与单位

物理量 / 对象Rated moisture removal capacity

符号MRC, ṁ_w,rated

SIkg/hkilogram of water per hour

CommonL/daylitre per day: Requires an explicit water-density and time basis

IPpt/daypint per day

定义

额定除湿量是除湿设备在明确试验方法和指定运行条件下标定的除水速率。

它可用 kg/h、L/day 或其他质量时间单位表示。有效比较应说明入口温湿度、风量、压力、运行模式、试验时长以及采用的标准或厂家方法。

公式与变量

MRC = Δm_w / Δt

适用条件: The removed water mass and elapsed time are measured under the named rating method, inlet conditions, airflow, pressure and operating mode.

符号	含义	单位
`MRC`	rated moisture removal capacity	kg/h or L/day
`Δm_w`	water removed during the rating interval	kg or L with density basis
`Δt`	rating interval	h or day

关系与区别

额定能力与实际能力

额定能力属于受控试验点；实际能力取决于项目入口状态、控制、安装和时间平均运行。

能力与湿负荷

能力是设备输出，湿负荷是应用所需除水速率；选型必须在兼容基准上比较两者。

工程意义

只有统一额定工况、时间基准和辅助设备边界后，才能比较不同设备。
应索取覆盖项目预期温湿度范围的性能数据，必要时包含低负荷或化霜运行。

常见误解

常见误解标称 100 L/day 的设备在任何房间里每天都能去除 100 L 水。

准确解释额定值只适用于注明工况；入口水分、温度、风量降低或周期运行都会使现场输出下降。

适用边界

家用、泳池、直膨新风和热再生吸附式设备采用不同评价方法和适用范围。
额定除湿量不能单独说明能耗、出口露点、机外静压、噪声或控制性能。

支持来源

ASHRAE / SRC-ASHRAE-TERMINOLOGY-M

ASHRAE Terminology: Moisture Removal Capacity ↗

/ Entry for moisture removal capacity
支持声明: Moisture removal capacity is water-vapour mass removed from process air per unit time; The quantity is reported as a mass rate
ASHRAE / SRC-ASHRAE-S20-CH25

ASHRAE Handbook - HVAC Systems and Equipment, Chapter 25: Mechanical Dehumidifiers and Related Components ↗

2020 SI edition / Chapter 25, capacity and performance rating discussion
支持声明: Rated dehumidification capacity is determined under specified test conditions; Capacity changes with equipment type and operating condition; Low-temperature operation and defrost can alter delivered output
ASHRAE / SRC-ASHRAE-STD139-2025-SCOPE

ANSI/ASHRAE Standard 139-2025 - Method of Testing for Rating Desiccant Dehumidifiers Utilizing Heat for the Regeneration Process ↗

2025 / ANSI/ASHRAE Standard 139-2025 title, purpose and public scope
支持声明: Heat-regenerated desiccant dehumidifiers have a standardized moisture-removal-capacity test method; The standard scope is limited to stated desiccant equipment and atmospheric pressure; Ratings from one method must not be transferred outside its scope

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