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  1. MEP.Learner

    Evaporative cooler for indoor space - air psychrometric

    Hi Engineers, I have questions for evaporative cooler application to different indoor spaces (like factories, hospital, wards, offices, public spaces). We are looking to deploy a more sustainable way to cool indoor space (maybe due to certain area with less budget to install aircon, lower...
  2. MEP.Learner

    ASHRAE weather data for specific time

    hi engineers i do have the account for ASHRAE weather data. However i would like to know the frequency of occurence for different range of temperature (DB and WB) from certain time only (eg. from 8am to 7pm). Eg. like 20% - it is hottest at 38 deg C. 50% is medium at 32 deg C, etc.. I wish...
  3. MEP.Learner

    HAP software- generating data in certain time only

    [highlight #FCAF3E][/highlight] Hi Engineers, For HAP Hourly analysis program, can anyone guide me how to generate the equipment sizing data for lets say from 2am to 5am which is off peak? As my case is a full glass building with very high sensible heat in the afternoon. (High peak total heat...
  4. MEP.Learner

    Oversized aircon cooling design and humidity issue

    hi Engineers, I have a project in tropical country, and issue that aircon probably oversized and have humidity issue (more than 70% RH obtained), with mold growing on walls observed. This may also due to hot humid air infiltration to the A/C space. Would like to ask for advice and opinion how...
  5. MEP.Learner

    Insufficient CHW water flow in existing pipe

    Hi Engineers, I have a existing premise with Central Chilled water system, which is undergoing a major renovation / refurbishment work. There is a portion where only existing CHW FCUs replacement work is carried out. Then here comes our problem, after the replacement work it seems that we can’t...
  6. MEP.Learner

    Study of introducing pre cool fresh air system

    Hi Engineers, As title above. For tropical country, what is the justification to introduce pre cool air system to AC system. Besides better humidity control, what about in term of cost and energy aspect? What i understand is that with precool air system, the air side equipment cooling coil...
  7. MEP.Learner

    Sprinkler design for shopping mall atrium space with high ceiling

    Hi Engineers, I have a situation where there is a shopping mall atrium with 25m ceiling height, atrium diameter is about 30m diameter on plan view. So the question is what kind of sprinkler can be adopted for this atrium protection as in BS EN code mention that sprinkler more than 18m is not...
  8. MEP.Learner

    Purpose of plate for pendant sprinkler

    Hi Engineers, I need some guidance of what is purpose of the plate at the sprinkler. Refer the attached picture. As I ask around the engineers and fire protection contractors, I have received mixed answer and I still can't be sure the exact reason to install the plate. Was this requirement to...
  9. MEP.Learner

    Noise measurement question

    Hi, Need some professional advices. I have a project requiring to measure noise in accordance to Indoor Air Quality (IAQ). I have doubts about the method statement of how this noise measurement should be taken. Is it acceptable to just take the noise in dBA? At what level and which point the...

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