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return

In finance, return is a profit on an investment. It comprises any change in value of the investment, and/or cash flows (or securities, or other investments) which the investor receives from that investment, such as interest payments, coupons, cash dividends, stock dividends or the payoff from a derivative or structured product. It may be measured either in absolute terms (e.g., dollars) or as a percentage of the amount invested. The latter is also called the holding period return.
A loss instead of a profit is described as a negative return, assuming the amount invested is greater than zero.
To compare returns over time periods of different lengths on an equal basis, it is useful to convert each return into a return over a period of time of a standard length. The result of the conversion is called the rate of return.Typically, the period of time is a year, in which case the rate of return is also called the annualized return, and the conversion process, described below, is called annualization.
The return on investment (ROI) is return per dollar invested. It is a measure of investment performance, as opposed to size (c.f. return on equity, return on assets, return on capital employed).

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  1. D

    return of... 3 way port, pump, faulty?

    Hi, I posted as a guest yesterday, as suggested have registered, now have more info. Took the electronics off the 3 way valve, turned valve shaft manually, only tuns about 45 degrees, but thats normal from what I've read. Electronics looks ok, put it back and left the override switch on...
  2. T

    Firebird problem

    First post and of course its a problem. I have a Firebird combi 7 oil fired, in most respects it is working fine, my problem is that the domestic side is feeding hot water to the radiators even when the central heating is switched off, neither pumps are running at the time but the burner is...
  3. M

    Worcester Bosch Greenstar 24i return pipe cold, downstairs rads cold

    Hi everyone, Had a bit of a nightmare with a Worcester Bosch Greenstar 24i system boiler, problem as follows: Upstairs rads getting hot, downstairs rads still cold, return pipe into boiler also cold. We've had a power flush, new fan in boiler, new pump, still the same problem. The first rad...
  4. G

    converting to fully pumped system

    hi guys im converting a gravity hot water with pumped heating to a fully pumped system. My question is im taking out old 28mm circs and replacing with 22mm what is the rule on the t on the shared return?
  5. T

    New towel radiator help please

    Hi everyone, The guys who put in my new combi boiler and radiators have left a hot and cold pipe in the bathroom ready for me to plumb-in my new towel radiator. They both have isolator valves (phew), so I'm assuming that connecting them up to the new radiator should be pretty straight forward...
  6. G

    2 port on UV cyl return

    Any thoughts on putting a 2 port on a megaflo return, which has a 3 port only set up. There is no room or pipework space to get it on the flow to cyl after the 3 port. Whoever fitted it must have thought the 2 port was a billy bonus for stock. My thinking is better on return than not at all.
  7. D

    noisy non return valve.

    I have a unvented system and have run a secondary return on the hot water due to the size of the property. I have a non return valve directly after the bronze pump that rattles and is causing a nuisance. Is there a diff type of double check valve i can use to stop this rattling?
  8. N

    Reverse circulation

    I have recently re located the cylinder cupboard (new cylinder) also adding a small radiator at the top of the stairs to the heating circuit , The pump had to be relocated as well. It was under the flooring boards in a bedroom, the pipe work has been extended by about 1 mtr and is still under...
  9. J

    Saniflow system

    Hi there, I was wondering if someone could advise me on a problem with a saniflow toilet? The tenant has told me that there is a backflow to the shower when the toilet is flushed along with a very loud noise. She said the same thing happens at the shower when she runs the tap on the sink. I...
  10. S

    Underfloor Heating Unexplained Temperature Drop

    Hello all, Underfloor setup is as follows: Dedicated 22mm flow from 2 port valve Dedicated 22mm Return which tees in to 28mm by cylinder. 11 Port Manifold Grundfos 25-60 Alpha 2 pump on manifold. Heatmiser setup but nothing is wired in as yet. The problem is that when the pump is off, the...
  11. cr0ft

    Reverse Return CH Piping

    Hi all. Does anyone have a good reference with diagrams that explains how this works? Been asked to quote for a system which will require 2x 35KW System boilers and am wanting to install them both onto the same CH pipework. It will be a 3 zone system in a very large property. Spoken with...
  12. melmos

    One for you commercial guys

    Public Ladies toilets having a problem with flow of water to washbasins. The taps are infrared with a solenoid, every morning when taps are tried there is only a trickle and its pulsing, after a few minutes they start to splutter and air is ejected and then a good flow of water. If left for half...
  13. C

    Mulberry Beckett stove not operating right.!!

    Hi there folks first off great site I have been lurking a wile and got some good info in the past but can't seem to find any help with this problem.ok so last year I replaced my open fire with a back boiler to a mulberry stove with a back boiler got a plumber in to connect it up was straight...
  14. P

    S Plan Vent Feed Options

    Please see attached diagrams.Please let me know what you think. Phillip Capron.
  15. C

    Does Slower pump speed= better condensing

    evening guys. On our condensing oil boiler will turning the pump speed to 1 increase the boilers condensing? That makes it more efficient? thanks
  16. A

    2 Zone Heating System

    Hi All, Let me start by stating that I am not a plumber. I should add that I have laid the piping and installed the radiators on a combi system previously... With that in place, I am looking to have a new modern and efficient heating and hot water system in my house. The house is a shell at...
  17. U

    Underfloor heating 1 room not warming up

    Hi, I'm hoping somebody could offer some advice. we have an underfloor heating system in 2 rooms (seperate zones, thermostat in each) it works fine in the first room but in the second room it doesn't get warm. what is confusing is the return feed for this room is hot so water is running...
  18. M

    Boiler controls ??

    Hi all. Do any of you guys fit boilers without a temp stat in place? 3 people I know have had fairly new boilers without any temp controls fitted just mechanical clocks.
  19. N

    Blocked return??

    Got called to a job as the WB conventional 30cdi was overheating and cutting out. Customer stated its been doing it on off at increasing frequency for about 2 months, a reset would sort it out. Now it won't run for more than 2minutes. checked pump, pipes either side cold, pump burning hot, took...
  20. K

    Hot water not staying hot, secondary return without pump fitted.

    I am at my wits end. We have a Centre Store 300L solar tank. We have not fitted the solar yet, that is for the future. When it was installed, the plumber appears to have plumbed in all the secondary return but there is no pump, so I am assuming that it is not used. However, if we heat the tank...
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