Recent content by HVACHawaii

Not really because we need to maintain a walking path on that side.

Picture speaks a thousand words. Please remenber this is not my configuration.http://files.engineering.com/getfile.aspx?folder=035bfe2a-475f-4bd1-9b62-eea1fb67c6c8&file=IMG_0189.JPG

Thanks for the very productive response "BigInch". I understand this is not a optimal configuration. I am trying to remedy a problem with the least cost impact to the contractor/client. I am not the designer just trying to fix what was done. So, back to my quesition. Does anyone think a suction...

A few more details. 6" pipe on the inlet with basket stainer right at the suction flange of the pump, then about 1 foot of pipe with an elbow up. There are no reducers. The pump sounds if rocks are being pumped through it. I know this is not the case. I have calc'ed the NPSHA and NPSHR, and...

Thanks Johnny, This is what I was thinking as well. Do you have any comment whether a suction diffuser could help alleviate this condition? John

Could a short pipe length on the suction of an end suction pump cause it to cavitate? Would a suction diffuser help this condition if so?

I think an MBA or JD is actually more important, especially when you get into the management side of the business. In my opinion, masters in engineering goes better with reasearch type positions.

10,000 is the Q. Then solve for SADB

lojack1. Actually that equation accounts only for the sensible load. You need to take into account latent load as well. Total load BTUH = 4.45 x CFM x delta h. Also you would want to cool down further than 75 beacause you won't do any dehumidification. I live in hot hutimd climate and we cool...

The lagoon is about 2 acres, and it is about 250 tons. However, becuase there is not much mixing in the lake the boundary of our heat rejection may be much less. Maybe only about 10,000-20,000 sqft.

Sorry, I should have mentioned this is a man-made lagoon with no direct connection to the ocean, and is not affected by tides. I do not believe that there are significant currents that allow for mixing, therfore feel that our system may create a hot spot, allowing for short circuiting.

I have a project that I am working on that the owner wants to utilize a lagoon adjacent to the site for a heat rejection system for residential heat pumps. We have been tasked in reviewing the proposed design/build. The project is in Hawaii so there are no real seasons. Also the lagoon is very...

Does anyone have any experience with aquaban anti-condensation coating? I have problem with sweating at air outlet which is in close proximity to a door. Any input would be appreciated.

Yorkman, I will provide you this information on Monday

Cooling coil is controlled by humidistat. The reheat coil is controlled by room temperature. Our room temperature is controlled nicely at setpoint. However, because the physicians like it nice and cold they crank the thermistat down to 67, which I'm sure you know will result in high RH. This is...