Thread: Lorentz solar pumps

Anybody got any comment or aware of this solar pump package


Lorentz solar pumps - PS 600 Package



1. 9 Pcs of 50 Wp PV module LEC-5048
2. Lorentz pump model HR-14 + Pump controller PS-600
3. Well ProbeThe above system can deliver up to 15000 litres/8 hours to height of 15 meters

Pumps are DC powered pumps working off 48-72 volt 125AH or 190AH DC battery packs







The back-up system: if needed

1. Solar charge controller model SET-4820 [48 Vdc/ 20 A]
2. Bi-directional Inverter/Charger model S-213C [ 1 KVA/ 48 Vdc]
3. Battery : 4 Pcs x EBB-125 125 Ah

125 Ah battery can provide 18 hours of back-up when battery is fully charge with 60 % DOD



Just under 200,000 THB for the main kit another 50,000 for the back-up kik

If you need to pump up water and ain't got access to the power grid - yes.
Otherwise it can't be worth its price.

^ Yep, mains power would be far cheaper. At that price, break even point wouldnt be for about 20 years I reckon - and I doubt you'd get 20 years life out of it.

Unless your going to be there all the time the locals will take it off your hands in a matter of days.

I'd look at other options like storing water and having it gravity fed. It would take a lot of water to get you through the dry season, but it'd still be a lot cheaper.

this is the blurb that follows this picture:

A sloping allotment that allows this type of setup is the ultimate system. The pump only needs to operate when the Header Tank is being filled up. Being gravity fed, there is always ample and constant water pressure.
The suggested "loop" system uses 40mm poly pipe with a tee off with 25mm feeder line into the hot water service (HWS). By positioning the HWS near to the most frequently used taps (kitchen and basin), the draw off before the hot water arrives is minimal and better than having small pipes that result in low delivery rates on low pressure. A two tap, single post mixer is ideal for ideal for a gravity fed system and allows better regulation of flow and temperature.

* By changing the Transfer Pump to a pressure pump the gravity fed system becomes a pressure system or a gravity feed system at the flick of a switch. The in-feed pipe to the tank must be fitted with an automatic level shut off ball valve. When the pump is turned on the house operates on the pressure system. When the power goes off the house operates as a gravity feed system. This system is recommended for fire prone areas.

For a site where it is not possible to have a Header Tank, install a pressure pump.

It seems that picking the right material for the tank can also be of high importance, i have been reading a thread about people using stainless steel, concrete, plastics or a combination for instance concrete with a marine epoxy inner shell.
The type of material depends on cost and im sure steel is the most expensive here, where as the concrete and epoxy inner coat seems to be the best overall for longevity and price, as epoxy is easy to do oneself and concrete abundant (in theory of course alternative materials like earth mix could also be used as a surround if plastic or metal was used but as yet have no info).

it might be worth finding out how much water you use per day, multiply accordingly, and then check this consumption in total against monthly or annual rainfall in your area. Of course the larger capacity of your holding - the more that is captured, so too in respects to the general climate and weather in regards to having such intense periods of rain over such a long period as this seems to work in favor of this scheme proposed. but also remember the efficiency of catching the water and storing as i mentioned above also aids this process to maximise the overall system that you might install.

All well and good, but now tell me how to figure in the amount of rain water I will be able to store in the years when the monsoon only lasts for a month of rain against the years when it fiddle fucks around and rains for 4 months, and then mango rains start 3 months later.

it doesnt matter how many times in the year it rains as long as there is a sufficient amount when it does, by maximising the amount being captured with-in this time period and by increasing the amount possible to hold by storing it this should not be a problem in a lot of situations and places. Im sure however some places are not suitable they can use wells (fair enough), but by all means go for mains!whatever floats your boat!!!!!!!

calculations will have to be done and these are specific to your area and all are relevant to individual data, based on your tank size your capturing device your source etc etc. im sure those who want to find out more will...............

You can either work a way to suit your needs and make it happen, unless it is implausible or you can be dictated to because of what you think is not possible/attainable, or by not caring enough to make it happen by what your own means is.

I like the idea of using solar but it has to be reasonably cost effective. The above mentioned 200,000 bht seems a wee bit high. I have 20 rai of sugar cane to irrigate and no electricity in the area. Currently using Kubota tractor to drive pump motor.
Question: How can I figure out the quantity of water needed daily to do this job?

Originally Posted by BuddhaChile

I like the idea of using solar but it has to be reasonably cost effective. The above mentioned 200,000 bht seems a wee bit high. I have 20 rai of sugar cane to irrigate and no electricity in the area. Currently using Kubota tractor to drive pump motor.
Question: How can I figure out the quantity of water needed daily to do this job?

Measure the output of your current pumping (liters per minute) by filling up a plastic tub or barrel.
Then time whatever it is you do to irrigate until you think it is watered enough and it would then be liters per minute x minutes irrigated.