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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. 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...
  2. 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.
  3. 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...
  4. 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...
  5. U

    Old cast iron column radiators flow return-urgent help

    Hi there I wondered if anyone could help quite urgently as rads get piped in tomorrow and I have a lot of conflicting advice. We are restoring an old property at the moment which had no central heating. We are putting in modern combi and old reclaimed cast iron column radiators. Some are...
  6. P

    Dual Glow Worm Flexicom SX Boilers - F9 Fault Code

    I have recently linked 2 no. Glow Worm Flexicom 30sx boilers and connected them via 35mm pipe work to a low loss header to serve an under-floor heating system in a large, new build, domestic property. The boilers have both been suffering with a reoccurring F9 fault code which is taking them out...
  7. P

    Sunvi momo for Spring return

    Anyone know if you have to change anything else other than leaving the white wire of the momo in a block on its own ? Do I have to change anything with the stat ?
  8. T

    Use radiator return for UFH

    Hi guys, Wondered if anyone can answer the following. When using rads upstairs and UFH downstairs is it possible to use the radiator return to feed into the flow of the UFH circuit and how, if you do, you go about it? Many thanks
  9. S

    Radiator balancing

    Sorry if this has been covered before. I live in a dormer bungalow. I'm replacing all of the down stairs radiators with vertical radiators. The flow and return pipes are dropping down in 15mm from the upper room where there is a loop of flow and return in 22mm. On all of the downstairs...
  10. A

    Single Room Underfloor Heating

    Hi All, I have installed UFH in my kitchen extension. Problem is to get it started. I can feel that hot water is going trough pump, but no heat water is coming back. So I thought either it's connected wrong or I have a air in the system. Please see file attached with pipework explained. So this...
  11. Hobo128

    Can someone explain please

    Can someone explain to me fully pumped, gravity and partially pump systems and direct and indirect please.
  12. S

    Tmv on secondary return pipework

    Looking at a refurb job with limited space for fitting tmv under each basin,Architect speced tmv in cylinder cupboard,but the HW is on a pumped secondary.Didnt think you could have a Tmv on the secondary pipework...
  13. eagleeye

    Secondary return on 2 unvented cylinders

    Im just in the process of installing 2 300 litre unvented cylinders in a large job am a bit unsure about the secondary return. Do I tee out the pump to both returns or just one ?
  14. J

    Secondary HW return circuits - how to control the pump?

    Hello In a large house with 7 showers and 3 kitchen sinks I think we need two secondary circuits for hot water, with the two 15mm returns connected back to a single re-circulating pump - probably one of the Grundfos Comfort pumps. How can I: 1. Switch off each return circuit separately when...
  15. hammers4spanner

    Strange one

    Came across a strange one today cust saying radiator not working properly . Two bedroom rads in rooms next to each other, bed 2 TRV constantly on max bed 1 rad next door shut no heat to either. , turn on bed 1 trv both rads heat up , turn off bed 1 TRV both radiators cool . Basically somehow...
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